| Publication | Date of Publication | Type |
|---|
| Spectral representation of absolutely minimum attaining unbounded normal operators | 2024-03-04 | Paper |
| Solution of an infinite band matrix equation | 2022-12-19 | Paper |
| \(G_1\)-class elements in a Banach algebra | 2022-10-27 | Paper |
| Condition pseudospectral radius of bounded linear operators | 2022-01-24 | Paper |
| Shift invariant spaces in \(L^2(\mathbb{R},\mathbb{C}^m)\) with \(m\) generators | 2021-08-19 | Paper |
| Absolutely minimum attaining closed operators | 2021-08-19 | Paper |
| Spectrum and related sets: a survey | 2021-08-19 | Paper |
| $G_1$ class elements in a Banach algebra | 2021-05-27 | Paper |
| Operators that attain reduced minimum | 2021-05-05 | Paper |
| GENERALIZED SPECTRA OF CONVOLUTION OPERATORS | 2020-04-28 | Paper |
| Decomposition of the \((n,\epsilon)\)-pseudospectrum of an element of a Banach algebra | 2020-01-27 | Paper |
| Continuity of the \((n,\varepsilon)\)-pseudospectrum in Banach algebras | 2019-08-13 | Paper |
| On the denseness of minimum attaining operators | 2018-11-22 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4576493 | 2018-07-12 | Paper |
| Gelfand-Mazur theorems in normed algebras: a survey | 2018-06-13 | Paper |
| The (\(n,\epsilon\))-pseudospectrum of an element of a Banach algebra | 2018-05-09 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4606722 | 2018-03-09 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4606755 | 2018-03-09 | Paper |
| Pseudospectra of elements of reduced Banach algebras | 2017-11-09 | Paper |
| Pseudospectrum of an element of a Banach algebra | 2017-05-26 | Paper |
| Operators that attain the reduced minimum | 2017-04-25 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3179636 | 2016-12-19 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2818737 | 2016-09-07 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3464542 | 2016-01-27 | Paper |
| The Nullity Theorem, Its Generalization and Applications | 2015-11-05 | Paper |
| Perturbation of closed range operators and Moore-Penrose inverse | 2015-10-06 | Paper |
| An Analogue of the Spectral Mapping Theorem for Condition Spectrum | 2015-07-02 | Paper |
| Banach algebra techniques to compute spectra, pseudospectra and condition spectra of some block operators with continuous symbols | 2015-05-29 | Paper |
| The null space theorem | 2015-02-27 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2938875 | 2015-01-16 | Paper |
| Generalized Inverses and Approximation Numbers | 2013-06-20 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4903294 | 2013-01-21 | Paper |
| Linear maps preserving pseudospectrum and condition spectrum | 2012-07-18 | Paper |
| Projection methods for computing Moore-Penrose inverses of unbounded operators | 2011-07-18 | Paper |
| The carrier graph topology | 2010-12-01 | Paper |
| Spectral isometries of real commutative Banach algebras | 2010-08-05 | Paper |
| A formula for gap between two closed operators | 2010-04-29 | Paper |
| Almost multiplicative functions on commutative Banach algebras | 2010-04-22 | Paper |
| Approximation numbers of operators on normed linear spaces | 2010-01-25 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3653729 | 2009-12-28 | Paper |
| Some properties of unbounded operators with closed range | 2009-10-15 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3628024 | 2009-05-19 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3627234 | 2009-05-14 | Paper |
| Projection methods for inversion of unbounded operators | 2008-07-11 | Paper |
| A relatively elementary proof of a characterization of polynomials | 2008-01-30 | Paper |
| Gleason--Kahane--Żelazko theorem for spectrally bounded algebra | 2006-04-19 | Paper |
| Solution of a tridiagonal operator equation | 2006-03-29 | Paper |
| An elementary proof for a characterization of *-isomorphisms | 2005-10-06 | Paper |
| Spectral theorem for an unbounded normal operator in a real Hilbert space | 2005-10-05 | Paper |
| Three types of operator monotonicity | 2005-10-05 | Paper |
| A Very Simple and Elementary Proof of a Theorem of Ingelstam | 2004-06-14 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4794058 | 2003-02-16 | Paper |
| Arzela-Ascoli theorem is stable | 2002-10-17 | Paper |
| A characterization of closed range operators | 2001-05-21 | Paper |
| Non-invertibility of certain almost Mathieu operators | 2001-05-14 | Paper |
| Dual spaces of quaternion normed linear spaces and reflexivity | 2001-04-16 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4496327 | 2000-08-13 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4699276 | 1999-12-19 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4246374 | 1999-11-29 | Paper |
| A note on the Gelfand-Mazur Theorem | 1998-09-10 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4371262 | 1998-01-11 | Paper |
| Applications of generalized inverses to interval linear programs in hilbert spaces | 1996-02-04 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4324511 | 1995-09-28 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4325655 | 1995-09-28 | Paper |
| Explicit solvability of a class of infinite linear economic models | 1995-08-27 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4844716 | 1995-08-27 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4323270 | 1995-03-16 | Paper |
| Representation of a Real B ∗ -Algebra on a Quaternionic Hilbert Space | 1994-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4029051 | 1993-03-30 | Paper |
| Representations of a Class of Real B ∗ -Algebras as Algebras of Quaternion-Valued Functions | 1993-01-17 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3985401 | 1992-06-27 | Paper |
| Choquet Boundary for Real Function Algebras | 1988-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3827083 | 1988-01-01 | Paper |
| Analytic and harmonic maps into a topological space | 1986-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3761112 | 1986-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3219317 | 1984-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3333564 | 1984-01-01 | Paper |
| Fourier transforms of physical functions. II: Infinitely many oscillations | 1983-01-01 | Paper |
| Fourier transforms of physical functions. I: Infinite differentiability | 1983-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3665710 | 1983-01-01 | Paper |
| A Topological Characterization of Gleason Parts of Real Function Algebras | 1983-01-01 | Paper |
| Gleason Parts of Real Function Algebras | 1981-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3954359 | 1981-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3906631 | 1980-01-01 | Paper |
