| Publication | Date of Publication | Type |
|---|
| https://portal.mardi4nfdi.de/entity/Q6203060 | 2024-03-26 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5096514 | 2022-08-17 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5064991 | 2022-03-17 | Paper |
| Eigenvalues of a class of fourth-order boundary value problems with transmission conditions using matrix theory | 2021-08-09 | Paper |
| Canonical forms of self-adjoint boundary conditions for regular differential operators of order three | 2021-05-14 | Paper |
| NEW CANONICAL FORMS OF SELF-ADJOINT BOUNDARY CONDITIONS FOR REGULAR DIFFERENTIAL OPERATORS OF ORDER FOUR | 2021-04-16 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5128362 | 2020-10-27 | Paper |
| Characterization of self-adjoint domains for two-interval even order singular \(C\)-symmetric differential operators in direct sum spaces | 2020-02-18 | Paper |
| Characterization of self-adjoint domains for regular even order <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>C</mml:mi> </mml:mrow> </mml:math>-symmetric differential operators | 2019-10-18 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5383460 | 2019-06-21 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4625517 | 2019-02-22 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4625534 | 2019-02-22 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4623597 | 2019-02-22 | Paper |
| A class of generalized differential operators with infinitely many discontinuous points | 2019-02-14 | Paper |
| The modified Parseval equality of Sturm-Liouville problems with coupled boundary condition | 2018-11-22 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4690384 | 2018-10-22 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4690733 | 2018-10-22 | Paper |
| The modified Parseval equality of Sturm-Liouville problems with transmission conditions | 2018-10-10 | Paper |
| Characterization of domains of self-adjoint ordinary differential operators of any order, even or odd | 2018-09-03 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3132481 | 2018-01-29 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4597246 | 2017-12-12 | Paper |
| Dependence of eigenvalues of 2\(n\)th order boundary value transmission problems | 2017-11-14 | Paper |
| Weyl function of Sturm-Liouville problems with transmission conditions at finite interior points | 2017-11-09 | Paper |
| Eigenvalues of regular fourth‐order Sturm–Liouville problems with transmission conditions | 2017-08-17 | Paper |
| Green function of fourth-order differential operator with eigenparameter-dependent boundary and transmission conditions | 2017-08-03 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5282632 | 2017-07-14 | Paper |
| Spectral analysis for discontinuous non-self-adjoint singular Dirac operators with eigenparameter dependent boundary condition | 2017-05-26 | Paper |
| Eigenvalues of periodic Sturm Liouville problems | 2017-01-12 | Paper |
| Dissipative operators, symplectic geometry, and limit-circle solutions | 2016-10-10 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2823341 | 2016-10-06 | Paper |
| Self-adjoint Sturm-Liouville problems with an infinite number of boundary conditions | 2016-07-27 | Paper |
| Sustaining long-term supply chain partnerships using price-only contracts | 2016-06-24 | Paper |
| Asymptotic behavior of eigenvalues and eigenfunctions of Sturm-Liouville problems with coupled boundary conditions and transmission conditions | 2016-06-23 | Paper |
| A new method of solving the index problem for Sturm-Liouville eigenvalues | 2016-05-04 | Paper |
| Matrix representations of Sturm-Liouville problems with coupled eigenparameter-dependent boundary conditions | 2016-05-02 | Paper |
| Fourth order boundary value problems with finite spectrum | 2016-05-02 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2788009 | 2016-03-07 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2788018 | 2016-03-07 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2788288 | 2016-03-07 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3193395 | 2015-10-28 | Paper |
| The Sturm-Liouville Friedrichs extension. | 2015-09-29 | Paper |
| Survey article: Self-adjoint ordinary differential operators and their spectrum | 2015-08-25 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5257603 | 2015-06-29 | Paper |
| Finite spectrum of \(2 n\)th order boundary value problems | 2015-05-15 | Paper |
| Symplectic geometry and dissipative differential operators | 2015-03-27 | Paper |
| Matrix representations of fourth-order boundary value problems with coupled or mixed boundary conditions | 2015-03-23 | Paper |
| The determinants of fourth order dissipative operators with transmission conditions | 2015-03-10 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5497620 | 2015-02-11 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2924493 | 2014-11-03 | Paper |
| Eigenvalues of limit-point Sturm-Liouville problems | 2014-07-17 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4980429 | 2014-06-30 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5414409 | 2014-05-05 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5413480 | 2014-04-30 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5398923 | 2014-02-28 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2860379 | 2013-11-19 | Paper |
| The finite spectrum of Sturm-Liouville problems with transmission conditions and eigenparameter-dependent boundary conditions | 2013-07-11 | Paper |
| The spectrum of singular Sturm-Liouville problems with eigenparameter dependent boundary conditions and its approximation | 2013-07-11 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2836809 | 2013-07-10 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2836823 | 2013-07-10 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2838769 | 2013-07-10 | Paper |
| Matrix representations of Sturm-Liouville problems with eigenparameter-dependent boundary conditions | 2013-02-22 | Paper |
| Equivalence of fourth order boundary value problems and matrix eigenvalue problems | 2013-02-08 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4901081 | 2013-01-24 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4901109 | 2013-01-24 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4901321 | 2013-01-24 | Paper |
| Characterization of domains of self-adjoint ordinary differential operators. II | 2013-01-10 | Paper |
| THE DISCRETENESS OF SPECTRUM FOR HIGHER-ORDER DIFFERENTIAL OPERATORS IN WEIGHTED FUNCTION SPACES | 2012-12-06 | Paper |
| Self-adjoint domains, symplectic geometry, and limit-circle solutions | 2012-11-22 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2916897 | 2012-10-05 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2919732 | 2012-10-05 | Paper |
| Matrix representations of Sturm-Liouville problems with transmission conditions | 2012-09-30 | Paper |
| Fourth order canonical forms of singular self-adjoint boundary conditions | 2012-06-11 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2885657 | 2012-06-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2886399 | 2012-06-01 | Paper |
| Matrix representations of fourth order boundary value problems with finite spectrum | 2012-04-19 | Paper |
| The spectrum of differential operators and square-integrable solutions | 2012-03-05 | Paper |
| Oscillation criteria of a class of fourth order differential equations | 2012-03-05 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3110716 | 2012-01-27 | Paper |
| Canonical forms of self-adjoint boundary conditions for differential operators of order four | 2012-01-04 | Paper |
| The finite spectrum of Sturm-Liouville problems with transmission conditions | 2011-11-22 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3170622 | 2011-09-29 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3170662 | 2011-09-29 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3170688 | 2011-09-29 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3016767 | 2011-07-19 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3002122 | 2011-05-19 | Paper |
| New approach to differential equations with countable impulses | 2011-04-08 | Paper |
| The classification of self-adjoint boundary conditions of differential operators with two singular endpoints | 2011-03-29 | Paper |
| Real-parameter square-integrable solutions and the spectrum of differential operators | 2011-02-09 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3071281 | 2011-02-05 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3071893 | 2011-02-05 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3072072 | 2011-02-05 | Paper |
| Completeness of eigenfunctions of Sturm-Liouville problems with transmission conditions | 2010-07-27 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3571218 | 2010-07-08 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3569449 | 2010-06-21 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3653810 | 2009-12-29 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3641751 | 2009-11-11 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5318547 | 2009-07-22 | Paper |
| Characterization of domains of self-adjoint ordinary differential operators | 2009-03-17 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3609168 | 2009-03-06 | Paper |
| Continuous spectrum and square-integrable solutions of differential operators with intermediate deficiency index | 2008-12-22 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3537997 | 2008-11-24 | Paper |
| The classification of self-adjoint boundary conditions: separated, coupled, and mixed | 2008-11-12 | Paper |
| Poincaré inequalities in weighted Sobolev spaces | 2008-09-17 | Paper |
| Spectrum of a class of fourth order left-definite differential operators | 2008-08-06 | Paper |
| Two-interval Sturm-Liouville operators in direct sum spaces with inner product multiples | 2008-05-07 | Paper |
| Two-interval Sturm--Liouville operators in modified Hilbert spaces | 2007-02-12 | Paper |
| On Hopf cyclicity of planar systems with multiple parameters | 2005-08-01 | Paper |
| On the self-adjointness of the product operators of two \(m\)th-order differential operators on \([0,+\infty)\) | 2005-06-07 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4827130 | 2004-11-16 | Paper |
| Weighted Poincaré inequalities on one-dimensional unbounded domains | 2004-06-11 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4796090 | 2003-10-06 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4545703 | 2003-04-06 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4803770 | 2003-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4446292 | 2003-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4779621 | 2002-12-12 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4783059 | 2002-12-02 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3150308 | 2002-12-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3154197 | 2002-11-14 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3154327 | 2002-11-14 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2778200 | 2002-03-13 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2721925 | 2001-07-11 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4514297 | 2000-11-14 | Paper |
| On self-adjointness of the product of two second-order differential operators | 2000-04-10 | Paper |
| A simple model for excitation -- contraction coupling in the heart | 1999-03-04 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4864925 | 1996-05-14 | Paper |
| On the discrete spectrum of ordinary differential operators in weighted function spaces | 1995-09-25 | Paper |
| On the spectrum of a class of differential operators and embedding theorems | 1995-02-13 | Paper |
| On the stability of steadily rotating waves in the free boundary formulation | 1993-06-29 | Paper |
| Embedding theorems and the spectra of certain differential operators | 1992-09-27 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3985058 | 1992-06-27 | Paper |
| APPROXIMATION AND ENTROPY NUMBERS OF SOBOLEV EMBEDDINGS OVER DOMAINS WITH FINITE MEASURE | 1992-06-25 | Paper |
| Wave front interaction in steadily rotating spirals | 1991-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3210368 | 1990-01-01 | Paper |
| On the self-adjoint extensions of symmetric ordinary differential operators with middle deficiency indices | 1986-01-01 | Paper |
