DOI10.1090/S0273-0979-1979-14595-6zbMath0441.49011WikidataQ55879775 ScholiaQ55879775MaRDI QIDQ3883068
Ivar Ekeland
Publication date: 1979
Published in: Bulletin of the American Mathematical Society (Search for Journal in Brave)
Hausdorff quasi-distances, periodic and fixed points for Nadler type set-valued contractions in quasi-gauge spaces ⋮
Some remarks on elliptic problems with critical growth in the gradient ⋮
Modified \(w\)-distances on quasi-metric spaces and a fixed point theorem on complete quasi-metric spaces ⋮
Some applications of Caristi's fixed point theorem in metric spaces ⋮
\(p\)-distances, \(q\)-distances and a generalized Ekeland's variational principle in uniform spaces ⋮
On Ha's version of set-valued Ekeland's variational principle ⋮
Multiplicity and asymptotic behavior of solutions to a class of Kirchhoff-type equations involving the fractional \(p\)-Laplacian ⋮
Multiplicity and asymptotic behavior of solutions for Kirchhoff type equations involving the Hardy-Sobolev exponent and singular nonlinearity ⋮
Existence of exponential \(p\)-stability nonconstant equilibrium of Markovian jumping nonlinear diffusion equations via Ekeland variational principle ⋮
New vectorial versions of Takahashi's nonconvex minimization problem ⋮
Existence theorems for single-valued and set-valued mappings with \(w\)-distances in metric spaces ⋮
Dislocated metric and fixed point theorems ⋮
A fixed point theorem for generalized contractions involving \(w\)-distances on complete quasi-metric spaces ⋮
Ekeland's variational principle in locally convex spaces and the density of extremal points ⋮
New fixed point results for mappings of contractive type with an application to nonlinear fractional differential equations ⋮
Partial regularity for holonomic minimisers of quasiconvex functionals ⋮
Dynamic processes, fixed points, endpoints, asymmetric structures, and investigations related to Caristi, Nadler, and Banach in uniform spaces ⋮
Mountain pass theorems without Palais-Smale conditions ⋮
On symmetric solutions of a critical semilinear elliptic system involving the Caffarelli-Kohn-Nirenberg inequality in \(\mathbb{R}^{N}\) ⋮
Characterizations of reflexivity and compactness via the strong Ekeland variational principle ⋮
Nuclear and full nuclear cones in product spaces: Pareto efficiency and an Ekeland type variational principle ⋮
Ekeland's variational principle, minimax theorems and existence of nonconvex equilibria in complete metric spaces ⋮
Some properties of general minimization problems with constraints ⋮
Degenerate elliptic inequalities with critical growth ⋮
The density of extremal points in Ekeland's variational principle ⋮
Smooth and nonsmooth Lipschitz controls for a class of vector differential equations ⋮
Ekeland variational principle for generalized vector equilibrium problems with equivalences and applications ⋮
Variational principles, minimization theorems, and fixed-point theorems on generalized metric spaces ⋮
A characterization for compact sets in the space of fuzzy star-shaped numbers with \(L_p\) metric ⋮
Best proximity points and fixed points for \(p\)-summing maps ⋮
Inward contractions on metric spaces ⋮
Applications of proximal calculus to fixed point theory on Riemannian manifolds ⋮
Some equivalent formulations of the generalized Ekeland's variational principle and their applications ⋮
Strict approximate solutions in set-valued optimization with applications to the approximate Ekeland variational principle ⋮
Vectorial form of Ekeland-type variational principle ⋮
A general vectorial Ekeland's variational principle with a P-distance ⋮
Fixed point theorems in ordered metric spaces via \(w\)-distances ⋮
Higher order mean curvature estimates for bounded complete hypersurfaces ⋮
Isovolumetric and isoperimetric problems for a class of capillarity functionals ⋮
A Brézis-Browder principle on partially ordered spaces and related ordering theorems ⋮
Optimal control of state constrained integral equations ⋮
A note on Caristi-type cyclic maps: related results and applications ⋮
Critical point theorems and Ekeland type variational principle with applications ⋮
Necessary conditions for optimal control of forward-backward stochastic systems with random jumps ⋮
Lipschitz functions and Ekeland's theorem ⋮
A generalized vector-valued variational principle in Fréchet spaces ⋮
An equilibrium version of vectorial Ekeland variational principle and its applications to equilibrium problems ⋮
An inverse function theorem in Fréchet spaces ⋮
Nonlinear versions of a vector maximal principle ⋮
Study of multiplicity and uniqueness of solutions for a class of nonhomogeneous sublinear elliptic equations ⋮
Necessary and sufficient conditions for near-optimal harvesting control problem of stochastic age-dependent system ⋮
Ekeland variational principle in asymmetric locally convex spaces ⋮
Variational principles and fixed point theorems ⋮
Analysis of microstructures and phase transition phenomena in one-dimensional, non-linear elasticity by convex optimization ⋮
High order inverse function theorems ⋮
Applications of an HIDS theorem to the existence of fixed point, abstract equilibria and optimization problems ⋮
On Ekeland's variational principle ⋮
Near optimality conditions in stochastic control of jump diffusion processes ⋮
Positional solutions of Hamilton-Jacobi equations in control problems for discrete-continuous systems ⋮
An infinite horizon stochastic maximum principle for discounted control problem with Lipschitz coefficients ⋮
Set-valued fixed-point theorems for generalized contractive mappings without the Hausdorff metric ⋮
Partial regularity for minima of higher order functionals with \(p(x)\)-growth ⋮
Characterization of approximate solutions of vector optimization problems with a variable order structure ⋮
Nonlinear error bounds for lower semicontinuous functions on metric spaces ⋮
Common fixed points for maps on metric space with \(w\)-distance ⋮
On a result by Boccardo-Ferone-Fusco-Orsina ⋮
Ekeland's variational principle for an \(\overline{L}^0\)-valued function on a complete random metric space ⋮
On the minimizers of calculus of variations problems in Hilbert spaces ⋮
A general maximum principle for optimal control of forward-backward stochastic systems ⋮
Metric viscosity solutions of Hamilton-Jacobi equations depending on local slopes ⋮
Set-valued pseudo-metric families and Ekeland's variational principles in fuzzy metric spaces ⋮
New periodic solutions with a prescribed energy for a class of Hamiltonian systems ⋮
An equilibrium version of set-valued Ekeland variational principle and its applications to set-valued vector equilibrium problems ⋮
Optimal control problems for distributed parameter systems in Banach spaces ⋮
Pontryagin's principle for state-constrained evolutionary differential complementarity system ⋮
Completeness in quasi-metric spaces and Ekeland variational principle ⋮
The positiveness of lower limits of the Hoffman constant in parametric polyhedral programs ⋮
\(Q\)-functions on quasimetric spaces and fixed points for multivalued maps ⋮
Ekeland's variational principle for vectorial multivalued mappings in a uniform space ⋮
Transitivity and variational principles ⋮
Variational principles and topological games ⋮
A generalization of the Karush-Kuhn-Tucker theorem for approximate solutions of mathematical programming problems based on quadratic approximation ⋮
Existence and symmetry of least energy solutions for a class of quasi-linear elliptic equations ⋮
Existence and regularity of multiple solutions for infinitely degenerate nonlinear elliptic equations with singular potential ⋮
A global smooth version of the classical Łojasiewicz inequality ⋮
Approximate subdifferential and metric regularity: The finite-dimensional case ⋮
Multiple solutions of the periodic boundary value problem for some forced pendulum-type equations ⋮
Stability and regular points of inequality systems ⋮
Minimal element theorems revisited ⋮
Maximum principle for near-optimality of mean-field FBSDEs ⋮
Non-quasi-convex problems in nonlinear elastostatics ⋮
Quasi-minima ⋮
Local convex analysis ⋮
Best approximation and optimization ⋮
Some inverse mapping theorems ⋮
Pontryagin's principle in the control of semilinear elliptic variational inequalities ⋮
Excited states for Coulomb systems in the Hartree-Fock approximation ⋮
Fixed points for directional multi-valued \(k(\cdot)\)-contractions ⋮
Optimality conditions for quasi-solutions of vector optimization problems ⋮
A Schechter type critical point result in annular conical domains of a Banach space and applications ⋮
Periodic solutions with prescribed minimal period for convex autonomous Hamiltonian systems ⋮
Stability of the geometric Ekeland variational principle: Convex case ⋮
Swimming below icebergs ⋮
Maximum principle of optimal stochastic control with terminal state constraint and its application in finance ⋮
Minimax principles for lower semicontinuous functions and applications to nonlinear boundary value problems ⋮
A critical point theory for nonsmooth functionals ⋮
A regularity theorem for minimizers of quasiconvex integrals ⋮
Hamilton-Jacobi equations in infinite dimensions. I: Uniqueness of viscosity solutions ⋮
Ekeland's variational principle and minimization Takahashi's theorem in generalized metric spaces ⋮
Yet on linear structures of norm-attaining functionals on Asplund spaces ⋮
Fixed point theorems for fuzzy mappings in complete metric spaces ⋮
The differentiability of real functions on normed linear space using generalized subgradients ⋮
Coincidence theorems for set-valued mappings and Ekeland's variational principle in fuzzy metric spaces ⋮
On the existence of a positive solution of semilinear elliptic equations in unbounded domains ⋮
The strong Ekeland variational principle, the strong drop theorem and applications ⋮
Extended well-posedness of optimization problems ⋮
Strong compactness in Sobolev spaces ⋮
Existence and partial regularity in the calculus of variations ⋮
Conditions for generic normality in optimal control ⋮
Density of the range of a wave operator with nonmonotone superlinear nonlinearity ⋮
Ljusternik-Schnirelmann theory on \(C^ 1\)-manifolds ⋮
Optimal bilinear control of nonlinear stochastic Schrödinger equations driven by linear multiplicative noise ⋮
Generic Frechet-differentiability of convex functions on small sets ⋮
Genericity and Hölder stability in semi-algebraic variational inequalities ⋮
Rolle's theorem and negligibility of points in infinite dimensional Banach spaces ⋮
Multiple of homoclinic solutions for a perturbed dynamical systems with combined nonlinearities ⋮
Infimal convolution and optimal time control problem. II: Limiting subdifferential ⋮
Common fixed point properties for a family of set-valued mappings ⋮
Critical singular problems on infinite cones. ⋮
Approximate Rolle's theorems for the proximal subgradient and the generalized gradient. ⋮
Vectorial Ekeland variational principle for systems of equilibrium problems and its applications ⋮
Equivalent formulations of Ekeland's variational principle ⋮
On Downing-Kirk's theorem. ⋮
Prior play in a deterministic differential game ⋮
Mean value theorems via maximal element techniques ⋮
Multiple solutions to elliptic equations on \(\mathbb{R}^N\) with combined nonlinearities ⋮
Multiple symmetric results for quasilinear elliptic systems involving singular potentials and critical Sobolev exponents in \(\mathbb{R}^N\) ⋮
Existence of isovolumetric \(\mathbb S^2\)-type stationary surfaces for capillarity functionals ⋮
Some generalizations of Ekeland-type variational principle with applications to equilibrium problems and fixed point theory ⋮
Regularity results for a class of obstacle problems under nonstandard growth conditions ⋮
Viscosity solutions of Hamilton-Jacobi equations in infinite dimensions. V: Unbounded linear terms and \(B\)-continuous solutions ⋮
Un principe de Pontryagine pour le contrôle des systèmes semilinéaires elliptiques. (A Pontryagin principle for control of semilinear elliptic systems) ⋮
Necessary conditions for infinite-dimensional control problems ⋮
A perturbation result on positive entire solutions of a semilinear elliptic equation ⋮
Proximal point method for locally Lipschitz functions in multiobjective optimization of Hadamard manifolds ⋮
Set-valued Caristi's fixed point theorem and Ekeland's variational principle ⋮
Ekeland's variational principle and Caristi's fixed point theorem in probabilistic metric space ⋮
Generalized Gerstewitz's functions and vector variational principle for \(\epsilon\)-efficient solutions in the sense of Németh ⋮
Critical point theory for the Lorentz force equation ⋮
Non-periodic Schrödinger lattice systems with perturbed and asymptotically linear terms: negative energy solutions ⋮
On some nonlinear problems induced by an abstract maximal element principle ⋮
Caristi's fixed point theorem in semimetric spaces ⋮
A special class of stationary flows for two-dimensional Euler equations: A statistical mechanics description ⋮
Local properties of geodesics on \(p\)-convex sets ⋮
Time optimal controls for semilinear distributed parameter systems. Existence theory and necessary conditions ⋮
Nearly Chebyshev sets are almost convex ⋮
On \(\varepsilon\)-equilibrium point in a noncooperative \(n\)-person game ⋮
The global weak sharp minima with explicit exponents in polynomial vector optimization problems ⋮
Three fixed point theorems for generalized contractions with constants in complete metric spaces ⋮
Characterization of \(\Sigma\)-semicompleteness via Caristi's fixed point theorem in semimetric spaces ⋮
Hamilton-Jacobi equations in infinite dimensions. III ⋮
Iterative and variational methods for the solvability of some semilinear equations in Hilbert spaces ⋮
Regularity results for a class of obstacle problems. ⋮
Second order information of Palais-Smale sequences in the mountain pass theorem ⋮
Exactly two positive solutions of nonhomogeneous semilinear elliptic equations in the half-space ⋮
Equivalent extensions to Caristi-Kirk's fixed point theorem, Ekeland's variational principle, and Takahashi's minimization theorem ⋮
Ekeland's principle and nuclear cones: a geometrical aspect ⋮
Coerciveness property for conical nonsmooth functionals ⋮
Near-optimal control problems for linear forward-backward stochastic systems ⋮
Equivalent forms of a generalized KKM theorem and their applications ⋮
Existence of standing waves for coupled nonlinear Schrödinger equations ⋮
Some remarks on nonsmooth critical point theory ⋮
Well posedness in vector optimization problems and vector variational inequalities ⋮
Applications of two critical point results for non-differentiable indefinite functionals ⋮
Extensions of minimization theorems and fixed point theorems on a quasimetric space ⋮
A comparison principle for Hamilton-Jacobi equations related to controlled gradient flows in infinite dimensions ⋮
Fixed point theorems for multivalued mappings on complete metric spaces ⋮
Multiple positive solutions for a semilinear elliptic equation with critical Sobolev exponent ⋮
Optimality necessary conditions in singular stochastic control problems with nonsmooth data ⋮
Some remarks on variational principles ⋮
Fixed points for \(w\)-contractive multimaps ⋮
Critical points of non-smooth functions with a weak compactness condition ⋮
Multiple positive solutions for a quasilinear elliptic equation involving singular potential and critical Sobolev exponent ⋮
The existence of nontrivial solutions to nonlinear elliptic equation of \(p\)-\(q\)-Laplacian type on \(\mathbb R^N\) ⋮
Generalized Caristi's fixed point theorems ⋮
Optimal control of semilinear elliptic variational bilateral problem ⋮
Representations of starshaped sets in normed linear spaces ⋮
Existence of minimizers for Kohn-Sham models in quantum chemistry ⋮
Vector variational principle ⋮
Generalized variational principle and vector optimization ⋮
Differential Lipschitzianness tests on abstract quasi-metric spaces ⋮
Hölder continuity of local minimizers ⋮
Approximation of quasiconvex functions, and lower semicontinuity of multiple integrals ⋮
Variational pairs and applications to stability in nonsmooth analysis. ⋮
Parametric Ekeland's variational principle ⋮
Multiple solutions of a semilinear elliptic equation in \(\mathbb{R}^ N\) ⋮
\(C^{1,\alpha}\) partial regularity of functions minimising quasiconvex integrals ⋮
Necessary conditions for minimax control problems of second order elliptic partial differential equations ⋮
On some periodic Hartree-type models for crystals ⋮
Smooth bump functions and the geometry of Banach spaces. A brief survey ⋮
Best proximity points for p-cyclic summing iterated contractions ⋮
On extended versions of Dancs-Hegedüs-Medvegyev’s fixed-point theorem ⋮
An ε-equilibrium point in ann-person game with constraints ⋮
Selected new aspects of the calculus of variations in the large ⋮
Basic Fixed Point Theorems in Metric Spaces ⋮
Exact and approximate vector Ekeland variational principles ⋮
Caristi Type Cyclic Contraction and Coupled Fixed Point Results in Bipolar Metric Spaces ⋮
PARAMETRIZED PERTURBATION RESULTS ON GLOBAL POSITIVE SOLUTIONS FOR ELLIPTIC EQUATIONS INVOLVING CRITICAL SOBOLEV-HARDY EXPONENTS AND HARDY TEREMS ⋮
Unnamed Item ⋮
Contraction Maps in Pseudometric Structures ⋮
Nuclear cones in product spaces, pareto efficiency and Ekeland-type variational principles in locally convex spaces ⋮
Unnamed Item ⋮
Unnamed Item ⋮
Eigenvalue problems and bifurcation of semilinear elliptic equation in N ⋮
The existence of a weak solution of inhomogeneous quasilinear elliptic equation with critical growth conditions ⋮
Unnamed Item ⋮
Completeness and the Contraction Principle ⋮
Least energy solutions for a class of fractional Schrödinger-Poisson systems ⋮
On Ekeland's variational principle for interval-valued functions with applications ⋮
Ground-states for the liquid drop and TFDW models with long-range attraction ⋮
Minimization without weak lower semicontinuity ⋮
The weak upper and lower solution method for quasilinear elliptic equations with generalized subdifferentiable perturbations ⋮
Further results on quasi efficient solutions in multiobjective optimization ⋮
Optimal control of quasilinear parabolic equations ⋮
Perturbed Schrödinger lattice systems: existence of homoclinic solutions ⋮
Ekeland variational principles for set-valued functions with set perturbations ⋮
A Note on The Zagrodny Mean Value Theorem ⋮
Mass splitting in the Thomas–Fermi–Dirac–von Weizsäcker model with background potential ⋮
Multiple solutions for nonhomogeneous elliptic equations involving critical Sobolev exponent ⋮
Positive solutions of quasilinear elliptic obstacle problems with critical exponents ⋮
Perturbed optimization on product spaces ⋮
Well-posedness criteria in optimization with application to the calculus of variations ⋮
Ekeland Variational Principles in Vector Equilibrium Problems ⋮
Generic Properties for Semialgebraic Programs ⋮
Survey on Metric Fixed Point Theory and Applications ⋮
Variational principles on topological spaces ⋮
Existence and nonexistence results for generalized quasilinear Schrödinger equations of Kirchhoff type in ℝ3 ⋮
Metric critical point theory: Potential Well Theorem and its applications ⋮
Necessary and sufficient conditions for near-optimality of stochastic delay systems ⋮
Existence of two solutions of nonlinear elliptic equations with critical Sobolev exponents and mixed boundary conditions ⋮
Approximate Feedback Minimum Principle for Suboptimal Processes in Non-smooth Optimal Control Problems ⋮
An induction theorem and Ekeland's variational principle in partial metric spaces with applications ⋮
On quasi-contraction mappings of Ćirić and Fisher type via ω-distance ⋮
On the existence of multiple positive solutions of critical semilinear elliptic problems ⋮
Stability of approximations in optimal nonlinear control ⋮
ŁOJASIEWICZ INEQUALITY FOR POLYNOMIAL FUNCTIONS ON NON-COMPACT DOMAINS ⋮
A perturbation result of semilinear elliptic equations in exterior strip domains ⋮
Ekeland's variational principle and Caristi's coincidence theorem for set-valued mappings in probabilistic metric spaces ⋮
Beyond the Mountain Pass: Some Applications ⋮
Equilibrium versions of variational principles in quasi-metric spaces and the robust trap problem ⋮
Equilibrium versions of set-valued variational principles and their applications to organizational behavior ⋮
An extension of the Rabinowitz bifurcation theorem to Lipschitz potential operators in Hilbert spaces ⋮
Ekeland's variational principle and Caristi's coincidence theorem for set-valued mappings in probabilistic metric spaces ⋮
Generic Gateaux differentiability via smooth perturbations ⋮
Hölder continuity of $\omega$-minimizers of functionals with generalized Orlicz growth ⋮
Unnamed Item ⋮
Ekeland's theorem and UC spaces ⋮
Multiple Homoclinic Solutions for Second‐Order Perturbed Hamiltonian Systems ⋮
Generalized distance and existence theorems in complete metric spaces ⋮
On an extension of ekeland's principle for vector-valued functions ⋮
Vector-valued variational principle in fuzzy metric space and its applications ⋮
Multiple solutions of nonhomogeneous Chouquard's equations ⋮
Subdifferential characterization ofs-lower regular functions ⋮
A general metric regularity in asplund banach spaces ⋮
A consequence of Djairo’s Lectures on the Ekeland variational principle ⋮
First-order rules for nonsmooth constrained optimization ⋮
Primal Lower Nice Functions and Their Moreau Envelopes ⋮
Fragmentability of sequences of set-valued mappings with applications to variational principles ⋮
ON FIXED POINTS OF GENERALIZED SET-VALUED CONTRACTIONS ⋮
Brezis-Browder Principles and Applications ⋮
Existence and Multiplicity of Positive Solutions For a Class of Elliptic Boundary Value Problems in the Half-Space ⋮
Positive solutions for a Dirichlet problem ⋮
Stability properties and large time behavior of viscosity solutions of Hamilton–Jacobi equations on metric spaces ⋮
On a three critical points theorem for non-differentiable functions and applications to nonlinear boundary value problems ⋮
A generalized Banach contraction principle that characterizes metric completeness ⋮
Global mixed Łojasiewicz inequalities and asymptotic critical values ⋮
Parallel proximal point methods for systems of vector optimization problems on Hadamard manifolds without convexity ⋮
Characterizations of error bounds for lower semicontinuous functions on metric spaces ⋮
Vectorial form of Ekeland variational principle with applications to vector equilibrium problems ⋮
Bifurcation of positive entire solutions for a semilinear elliptic equation ⋮
Ekeland-type variational principle with applications to nonconvex minimization and equilibrium problems ⋮
On projectional resolution of identity on the duals of certain Banach spaces ⋮
A nonconvex vector minimization problem ⋮
CHEBYSHEV SETS ⋮
A variational principle, coupled fixed points and market equilibrium ⋮
Quasi-variational relation problems and generalized Ekeland's variational principle with applications ⋮
Existence and multiplicity results forp-laplacian Dirichlet problem with combined nonlinearities ⋮
Convergence properties of an algorithm for solving non-differentiable optimal control problems ⋮
Function-differential inequalities via maximality procedures ⋮
A Palais-Smale approach to problems in Esteban-Lions domains with holes ⋮
Generalized representer theorems in Banach spaces ⋮
Eckland and Bishop-Phelps variational principles in partially ordered spaces ⋮
On Kirchhoff type problems involving critical and singular nonlinearities ⋮
Maximality, fixed points and variational principles for mappings on quasi-uniform spaces ⋮
A note on generalized quasi-contraction ⋮
Remarks to an equivalent formulation of ekeland’s variational principle ⋮
Unnamed Item ⋮
Stochastic near-optimal control for drug therapy in a random viral model with cellular immune response ⋮
Graphical Ekeland’s principle for equilibrium problems ⋮
Pontryagin maximum principle for the optimal control of linearized compressible Navier-Stokes equations with state constraints ⋮
Multiple solutions for Schrödinger lattice systems with asymptotically linear terms and perturbed terms ⋮
Łojasiewicz inequalities with explicit exponents for smallest singular value functions ⋮
Ground state solutions for a class of generalized quasilinear Schrödinger-Poisson systems ⋮
On \(G\)-invariant solutions of a singular biharmonic elliptic system involving multiple critical exponents in \(R^N\) ⋮
Existence and multiplicity of solutions for nonlocal fourth-order elliptic equations with combined nonlinearities ⋮
Optimality conditions for a nonlinear boundary value problem using nonsmooth analysis ⋮
A new type of Kannan's fixed point theorem in strong \(b\)-metric spaces ⋮
Vectorial form of Ekeland-type variational principle with applications to vector equilibrium problems and fixed point theory ⋮
Necessary and sufficient condition on global optimality without convexity and second order differentiability ⋮
Fixed point results for multivalued maps in metric spaces with generalized inwardness conditions ⋮
Vectorial Ekeland variational principle and cyclically antimonotone equilibrium problems ⋮
Concentration-compactness principle at infinity and semilinear elliptic equations involving critical and subcritical Sobolev exponents ⋮
Mountain pass theorems and global homeomorphism theorems ⋮
Existence and uniqueness of positive solution for nonhomogeneous sublinear elliptic equations ⋮
The Dubovickij-Miljutin lemma and characterizations of optimal allocations in non-smooth economies ⋮
Critical gauged Schrödinger equations in \(\mathbb{R}^2\) with vanishing potentials ⋮
Markovian switching for near-optimal control of a stochastic SIV epidemic model ⋮
Remarks on some variants of minimal point theorem and Ekeland variational principle with applications ⋮
Redefinition of \(\tau\)-distance in metric spaces ⋮
Boundary control problems for quasi-linear elliptic equations: A Pontryagin's principle ⋮
A generalization of Ekeland's variational principle by using the \(\tau\)-distance with its applications ⋮
A revised pre-order principle and set-valued Ekeland variational principles with generalized distances ⋮
On variational principles, level sets, well-posedness, and \(\epsilon\)-solutions in vector optimization ⋮
Hölder-type global error bounds for non-degenerate polynomial systems ⋮
Existence and optimality conditions for relaxed mean-field stochastic control problems ⋮
A quantitative version of the Bishop-Phelps theorem for operators in Hilbert spaces ⋮
Equivalent conditions for local error bounds ⋮
Generalized contractive set-valued maps on complete preordered quasi-metric spaces ⋮
Existence and optimality of accessible and approximatable minimizers of quasi upper robust functions ⋮
Optimal control for evolution equations with memory ⋮
Optimal bilinear control of stochastic nonlinear Schrödinger equations: mass-(sub)critical case ⋮
A stochastic epidemic model with nonmonotone incidence rate: sufficient and necessary conditions for near-optimality ⋮
Near-optimal control for stochastic recursive problems ⋮
A global diffeomorphism theorem for Fréchet spaces ⋮
Existence and non-existence results for quasilinear Kirchhoff problems with the Hardy-Sobolev exponent ⋮
A generalized variational principle and its application to equilibrium problems ⋮
Metric or partial metric spaces endowed with a finite number of graphs: a tool to obtain fixed point results ⋮
A general form of the weak maximum principle and some applications ⋮
Weakly contractive multivalued maps and \(w\)-distances on complete quasi-metric spaces ⋮
Geometric reconstruction in bioluminescence tomography ⋮
On a class of first order Hamilton-Jacobi equations in metric spaces ⋮
Existence theorems for generalized distance on complete metric spaces ⋮
Existence and properties of Hopf bifurcation in an age-dependent predation system with prey harvesting ⋮
The weak Ekeland variational principle and fixed points ⋮
Equivalence of solutions of eikonal equation in metric spaces ⋮
Fixed points for contractive mappings of integral type involving \(\omega\)-distance and applications ⋮
Generic existence of solutions for some perturbed optimization problems ⋮
Caristi's fixed point theorem, Ekeland's variational principle and Takahashi's maximization theorem in fuzzy quasi-metric spaces ⋮
Existence of efficient and properly efficient solutions to problems of constrained vector optimization ⋮
Ekeland variational principles in 2-local branciari metric spaces ⋮
Homotopic metric-interval L-contractions in gauge spaces ⋮
On the spread of positively curved Alexandrov spaces ⋮
Ground state solutions for planar Schrödinger-Poisson system involving subcritical and critical exponential growth with convolution nonlinearity ⋮
A pre-order principle and set-valued Ekeland variational principle ⋮
A variational principle and coupled fixed points ⋮
On some generalizations of Ekeland's principle and inward contractions in gauge spaces ⋮
Ekeland's variational principle in weak and strong systems of arithmetic ⋮
Generic solutions for some perturbed optimization problem in non-reflexive Banach spaces ⋮
Generalized Caristi's fixed point theorems by Bae and others ⋮
Variational analysis in psychological modeling ⋮
Functional type Caristi-Kirk theorem on two metric spaces and applications ⋮
Function variational principles and coercivity ⋮
From an abstract maximal element principle to optimization problems, stationary point theorems and common fixed point theorems ⋮
Fixed points of set-valued Caristi-type mappings on semi-metric spaces via partial order relations ⋮
Nonsmooth analysis and Hamilton--Jacobi equations on Riemannian manifolds ⋮
Homoclinic solutions for perturbed discrete Schrödinger systems in infinite lattices: sublinear and asymptotically linear cases ⋮
The \(\varepsilon\)-strategy in variational analysis: illustration with the closed convexification of a function ⋮
Multiple homoclinic solutions for discrete Schrödinger equations with perturbed and sublinear terms ⋮
Some Caristi-type fixed point theorems ⋮
Optimal vaccination strategy for an SIRS model with imprecise parameters and Lévy noise ⋮
Gradient flows and evolution variational inequalities in metric spaces. I: structural properties ⋮
Well-posedness and subdifferentials of optimal value and infimal convolution ⋮
Finding nicer mappings with lower or equal energy in nonlinear elasticity ⋮
A limiting subdifferential version of Ekeland's variational principle in set optimization ⋮
Lusternik-Schnirelman theory for the action integral of the Lorentz force equation ⋮
Ekeland's type variational principle for locally convex cone-valued functions ⋮
Viscosity solutions of fully nonlinear second-order equations and optimal stochastic control in infinite dimensions. III: Uniqueness of viscosity solutions for general second-order equations ⋮
Viscosity solutions of fully nonlinear second-order equations and optimal stochastic control in infinite dimensions. I: The case of bounded stochastic evolutions ⋮
Critical points for multiple integrals of the calculus of variations ⋮
A note on the finite convergence of alternating projections ⋮
Existence for minimization in Banach space with some applications ⋮
A unified theory of necessary conditions for nonlinear nonconvex control systems ⋮
Solutions of Hartree-Fock equations for Coulomb systems ⋮
Some characterizations of error bound for non-lower semicontinuous functions ⋮
Characterizations of an approximate minimum in optimal control ⋮
Morse index estimates in min-max theorems ⋮
Special issue: Variational analysis, optimization, and fixed point theory ⋮
Ekeland, Takahashi and Caristi principles in quasi-pseudometric spaces ⋮
High and low perturbations of Choquard equations with critical reaction and variable growth ⋮
Multiple solutions for non-periodic Schrödinger lattice systems with perturbation and super-linear terms ⋮
General versions of the Ekeland variational principle: Ekeland points and stop and go dynamics ⋮
Near-optimal control and threshold behavior of an avian influenza model with spatial diffusion on complex networks ⋮
Vectorial variational principle with variable set-valued perturbation ⋮
Fixed points and variational principles with applications to capability theory of wellbeing via variational rationality ⋮
Near-optimal stochastic control for radiotherapy treatment in a random cancer model ⋮
Vector-valued variational principles ⋮
Set-valued Ekeland variational principles in fuzzy metric spaces ⋮
Solutions to semilinear elliptic problems with combined nonlinearities ⋮
Optimal control for semilinear evolutionary variational bilateral problem. ⋮
Ekeland's variational principle for the set-valued map with variable ordering structures and applications ⋮
Regularity for minimizing sequences of some variational integrals ⋮
Relativistic equations with singular potentials ⋮
Ekeland, Takahashi and Caristi principles in preordered quasi-metric spaces ⋮
Combined effects in nonlinear elliptic equations involving fractional operators ⋮
An elementary proof of Marcellini Sbordone semicontinuity theorem ⋮
Some theorems on a minimum of a function, fixed and coincidence points ⋮
Kohn–Sham computation and the bivariate view of density functional theory ⋮
A New Extension of Banach-Caristi Theorem and its Application to Nonlinear Functional Equations ⋮
Maximum principle for stochastic control of SDEs with measurable drifts ⋮
Ekeland variational principle and its equivalents in T1-quasi-uniform spaces ⋮
Equilibrium problems on quasi-weighted graphs ⋮
Equilibrium set-valued variational principles and the lower boundedness condition with application to psychology ⋮
Subsmooth sets: Functional characterizations and related concepts ⋮
Calmness and Stability Properties of Marginal and Performance Functions ⋮
Second order necessary conditions of optimality for stochastic systems with variable delay ⋮
Existence of multiple positive solutions of inhomogeneous semilinear elliptic problems in unbounded domains ⋮
The Pontryagin maximum principle for minimax problems of optimal control ⋮
Feedback minimum principle for quasi-optimal processes of terminally-constrained control problems ⋮
Ekeland's principle for cyclically antimonotone equilibrium problems ⋮
Takahashi's minimization theorem and some related results in quasi-metric spaces ⋮
Nondifferentiable optimization by smooth approximations ⋮
Multiplicity and concentration results for fractional Schrödinger system with steep potential wells ⋮
Necessary conditions of optimal impulse controls for distributed parameter systems ⋮
On the continuity of the polyconvex, quasiconvex and rank-oneconvex envelopes with respect to growth condition ⋮
Critical point theory for nondifferentiable functionals and applications ⋮
Ekeland-Type Variational Principles and Equilibrium Problems ⋮
Existence of solutions and optimal control for reflecting stochastic differential equations with applications to population control theory* ⋮
Brezis-Browder Principle and Dependent Choice ⋮
Smooth bump functions and geomentry of Banach spaces ⋮
On generalized ordering principles in nonlinear analysis ⋮
Approximate subdifferentials and applications 3: the metric theory ⋮
Ekeland's variational principle and the mountain pass lemma ⋮
Detecting the completeness of a Finsler manifold via potential theory for its infinity Laplacian ⋮
∊-gradients pour les ponctions localements lipschitziennes et applications ⋮
Tangent vectors to sets in the theory of geodesics ⋮
Necessary and sufficient conditions for optimal controls in viscous flow problems ⋮
The drop theorem, the petal theorem and Ekeland's variational principle ⋮
Critical points and nonlinear variational problems ⋮
On metric regularity of multifunctions ⋮
Subtangents with controlled slope ⋮
Pseudometric Extensions of the Brezis-Browder Ordering Principle ⋮
Minimal elements for product orders ⋮
A Characterization of Complete Metric Spaces ⋮
Existence of a positive solution for some quasilinear elliptic equations in \(\mathbb{R}^N\) ⋮
Existence and boundedness of a minimiser for a constrained minimisation problem on Rn with limiting exponent ⋮
Density of the Range of Potential Operators ⋮
Regularisations of convex functions and slicewise suprema ⋮
Ekeland's variational principle for interval-valued functions ⋮
Ćirić's and Fisher's quasi-contractions in the framework of \(wt\)-distance ⋮
A generalization of ekellandz’s variational principle ⋮
On classes of subdifferentiability spaces of Ioffe ⋮
Unnamed Item ⋮
On the local surjection property ⋮
Kirchhoff-type fractional Laplacian problems with critical and singular nonlinearities ⋮
2-SYMMETRIC CRITICAL POINT THEOREMS FOR NON-DIFFERENTIABLE FUNCTIONS ⋮
Some existence and uniqueness theorems on ordered metric spaces via generalized distances ⋮
An ε-lagrange multiplier rule for a mathematical programming problem on banacch spaces∗ ⋮
Linear and nonlinear error bounds for lower semicontinuous functions ⋮
On a system of nonlinear Schrödinger equations with quadratic interaction ⋮
A random variational principle with application to weak Hadamard differentiability of convex integral functionals ⋮
Solvability of Quasilinear Elliptic Equations with Nonlinear Boundary Conditions ⋮
On the mean value theorem ⋮
Function Variational Principles and Normed Minimizers ⋮
Functional variational principles and coercivity over normed spaces ⋮
Morse theory and existence of periodic solutions of convex hamiltonian systems ⋮
Existence and bifurcation for some elliptic problems on exterior strip domains ⋮
Multiple positive solutions of nonhomogeneous elliptic equations in unbounded domains ⋮
Eigenvalue problems and bifurcation of nonhomogeneous semilinear elliptic equations in exterior strip domains ⋮
A multiplier rule on a metric space ⋮
On maximal element theorems, variants of Ekeland's variational principle and their applications ⋮
On the relation between the weak Palais-Smale condition and coercivity given by Zhong ⋮
On the stochastic maximum principle in optimal control of degenerate diffusions with Lipschitz coefficients ⋮
Systems of equilibrium problems with applications to new variants of Ekeland's variational principle, fixed point theorems and parametric optimization problems ⋮
Integration of primal lower nice functions in Hilbert spaces ⋮
Evolution equations with lack of convexity ⋮
Weak contractor directions and weak directional contractions ⋮
Open mappings theorems and linearization stability ⋮
Existence of multiple positive solutions of subcritical semilinear elliptic problems in exterior strip domains ⋮
The strong Ekeland variational principle ⋮
Large deviation for diffusions and Hamilton-Jacobi equation in Hilbert spaces ⋮
A Variational approach to superlinear elliptic problems ⋮
On Supportless Convex Sets ⋮
Critical points for nondifferentiable functions in presence of splitting ⋮
Local wellposedness of constrained problems ⋮
ŁOJASIEWICZ-TYPE INEQUALITIES AND GLOBAL ERROR BOUNDS FOR NONSMOOTH DEFINABLE FUNCTIONS IN O-MINIMAL STRUCTURES ⋮
Singular elliptic problems with lack of compactness ⋮
The palais-smale condition versus coercivity ⋮
The variational principle and stochastic optimal control ⋮
Optimal control of variational inequalities with delays in the highest order spatial derivatives ⋮
The existence and regularity of multiple solutions for a class of infinitely degenerate elliptic equations ⋮
A variational principle and best proximity points ⋮
Sequentially lower complete spaces and Ekeland's variational principle ⋮
A Smooth Variational Principle With Applications to Subdifferentiability and to Differentiability of Convex Functions ⋮
Existence theorems for nonlinear operator equations without continuity condition ⋮
Binding of atoms and stability of molecules in hartree and thomas-fermi type theories. ⋮
Drop theorems and lipschitzianness tests via maximality procedures ⋮
Bounds for some minimizing sequences of functionals ⋮
Existence of multiple positive solutions of semilinear elliptic boundary value problems in the half space ⋮
A Hölder continuity result for a class of obstacle problems under non standard growth conditions ⋮
Differential inequalities via maximal element techniques ⋮
Nonsmooth Analysis: Differential Calculus of Nondifferentiable Mappings ⋮
The subgradient in n ⋮
The subdifferential in Banach spaces ⋮
Binding of atoms and stability of molecules in hartree and thomas—fermi type theories ⋮
Variational principles with generalized distances and the modelization of organizational change ⋮
Pontryagin's Principle of Mixed Control-State Constrained Optimal Control Governed by Fluid Dynamic Systems ⋮
Stability criteria for contractive semigroups via maximality procedures ⋮
ŁOJASIEWICZ INEQUALITY ON NON-COMPACT DOMAINS AND SINGULARITIES AT INFINITY ⋮
Subdifferentials are locally maximal monotone ⋮
Binding of atoms and stability of molecules in hartree and thomas-fermi type theories. ⋮
A generalization of the Brézis-Browder principle on ordered sets ⋮
An application of Ekeland's theorem to minimax problems