| Publication | Date of Publication | Type |
|---|
| Jan Stochel, a stellar mathematician | 2024-04-11 | Paper |
| Weighted shifts on directed trees with one branching vertex: between quasinormality and paranormality | 2024-01-19 | Paper |
| https://portal.mardi4nfdi.de/entity/Q6109516 | 2023-07-04 | Paper |
| Conditionally positive definite unilateral weighted shifts | 2023-06-05 | Paper |
| Convergence of power sequences of B-operators with applications to stability | 2023-06-05 | Paper |
| Lifting Brownian-type operators with subnormal entry | 2023-04-16 | Paper |
| On the structure of conditionally positive definite algebraic operators | 2022-08-22 | Paper |
| Conditional positive definiteness in operator theory | 2022-05-16 | Paper |
| On weighted adjacency operators associated to directed graphs | 2022-01-05 | Paper |
| Weighted shifts on directed trees with one branching vertex: \(n\)-contractivity and hyponormality | 2021-12-14 | Paper |
| Generalizations of the relation of quasisimilarity for operators | 2021-09-22 | Paper |
| Taylor spectrum approach to Brownian-type operators with quasinormal entry | 2021-04-16 | Paper |
| Hamburger-type weighted shifts: jumping flatness and Aluthge transforms | 2021-02-12 | Paper |
| A subnormal completion problem for weighted shifts on directed trees. II | 2020-04-22 | Paper |
| \(m\)-isometric operators and their local properties | 2020-04-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5215867 | 2020-02-13 | Paper |
| Taylor spectrum approach to Brownian-type operators with quasinormal entry | 2019-10-07 | Paper |
| Hyperinvariant subspaces for some 2 × 2 operator matrices, II | 2019-07-22 | Paper |
| m-isometric operators and their local properties | 2019-06-12 | Paper |
| A subnormal completion problem for weighted shifts on directed trees | 2019-02-21 | Paper |
| Hyponormality of finite rank perturbations of normal operators | 2018-11-22 | Paper |
| Hyperinvariant subspaces for a class of quasinilpotent operators | 2018-11-01 | Paper |
| Rank-one perturbation of weighted shifts on a directed tree: partial normality and weak hyponormality | 2018-08-27 | Paper |
| Weak Hamburger-type weighted shifts and their examples | 2018-04-25 | Paper |
| Unbounded weighted composition operators in \(L^2\)-spaces | 2018-03-09 | Paper |
| On normal products of selfadjoint operators | 2018-02-20 | Paper |
| ALMOST INVARIANT HALF-SPACES FOR OPERATORS ON HILBERT SPACE | 2018-01-12 | Paper |
| Semi-cubic hyponormality of weighted shifts with Stampfli recursive tail | 2017-11-10 | Paper |
| Almost invariant half-spaces for operators on Hilbert space. II: operator matrices | 2017-10-26 | Paper |
| On Semi-cubically Hyponormal Weighted Shifts with First Two Equal Weights | 2017-09-26 | Paper |
| Subnormality of unbounded composition operators over one-circuit directed graphs: exotic examples | 2017-04-03 | Paper |
| Partially normal composition operators relevant to weighted directed trees | 2017-02-14 | Paper |
| Semi-cubic hyponormality of weighted shifts with stampfli recursive tail | 2016-09-26 | Paper |
| A subnormal weighted shift on a directed tree whose \(n\)th power has trivial domain | 2015-11-18 | Paper |
| Unbounded subnormal composition operators in \(L^2\)-spaces | 2015-08-17 | Paper |
| Weighted shifts induced by Hamburger moment sequences | 2015-05-04 | Paper |
| A multiplicative property characterizes quasinormal composition operators in \(L^2\)-spaces | 2015-02-27 | Paper |
| Quadratically hyponormal weighted shifts with recursive tail | 2015-02-26 | Paper |
| Rank-one perturbations of normal operators and hyponormality | 2014-11-25 | Paper |
| A cyclic subnormal completion of complex data | 2014-11-18 | Paper |
| A hyponormal weighted shift on a directed tree whose square has trivial domain | 2014-09-16 | Paper |
| Transitivity and structure of operator algebras with a metric property | 2014-07-31 | Paper |
| On unbounded composition operators in \(L^2\)-spaces | 2014-07-01 | Paper |
| BACKWARD 3-STEP EXTENSIONS OF RECURSIVELY GENERATED WEIGHTED SHIFTS: A RANGE OF QUADRATIC HYPONORMALITY | 2014-06-06 | Paper |
| Backward extensions of recursively generated weighted shifts and quadratic hyponormality | 2014-05-23 | Paper |
| Unbounded quasinormal operators revisited | 2014-05-23 | Paper |
| A Class of Invertible Bilateral Weighted Shifts | 2014-04-04 | Paper |
| Normal extensions escape from the class of weighted shifts on directed trees | 2013-10-10 | Paper |
| Operators with absolute continuity properties: an application to quasinormality | 2013-06-10 | Paper |
| Unbounded subnormal weighted shifts on directed trees. II | 2012-12-20 | Paper |
| On semi-weakly \(n\)-hyponormal weighted shifts | 2012-09-27 | Paper |
| Unbounded subnormal weighted shifts on directed trees | 2012-08-01 | Paper |
| A non-hyponormal operator generating Stieltjes moment sequences | 2012-05-30 | Paper |
| Weighted shifts on directed trees | 2012-04-12 | Paper |
| Unbounded subnormal weighted shifts on directed trees I | 2012-03-01 | Paper |
| An Algorithm for Quartically Hyponormal Weighted Shifts | 2011-10-25 | Paper |
| Hyperexpansive completion problem via alternating sequences; an application to subnormality | 2011-04-11 | Paper |
| Gaps of operators via rank-one perturbations | 2011-02-09 | Paper |
| Spectral decomposability of rank-one perturbations of normal operators | 2011-01-07 | Paper |
| L(n)-HYPONORMALITY: A MISSING BRIDGE BETWEEN SUBNORMALITY AND PARANORMALITY | 2010-05-19 | Paper |
| On the Iterated Duggal Transforms | 2010-05-06 | Paper |
| Dual subspaces of operators | 2010-03-10 | Paper |
| Block matrix operators and weak hyponormalities | 2010-01-13 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3633420 | 2009-06-19 | Paper |
| Quasiaffine transforms of operators | 2009-06-15 | Paper |
| Aluthge iterations of weighted translation semigroups | 2009-05-20 | Paper |
| Quadratically Hyponormal Recursively Generated Weighted Shifts | 2009-03-11 | Paper |
| On rank-one perturbations of normal operators, II | 2009-02-26 | Paper |
| Subnormal operators whose adjoints have rich point spectrum | 2008-11-12 | Paper |
| On \(n\)-contractive and \(n\)-hypercontractive operators. II | 2008-06-30 | Paper |
| Generalized Friedland's theorem for \(C_0\)-semigroups | 2008-05-15 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5454059 | 2008-04-03 | Paper |
| Some quadratically hyponormal weighted shifts | 2008-04-03 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5444043 | 2008-02-22 | Paper |
| On rank-one perturbations of normal operators | 2008-01-15 | Paper |
| Separating classes of composition operators via subnormal condition | 2007-11-01 | Paper |
| COMPLEX MOMENT MATRICES VIA HALMOS-BRAM AND EMBRY CONDITIONS | 2007-10-24 | Paper |
| Composition operators with weak hyponormality | 2007-10-02 | Paper |
| Transitive operators and a problem of Halmos | 2007-05-03 | Paper |
| Operators that admit a moment sequence, II | 2007-03-21 | Paper |
| Hyperinvariant subspaces for some subnormal operators | 2007-03-07 | Paper |
| On \(k\)-hyperexpansive operators | 2006-11-15 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5492485 | 2006-10-13 | Paper |
| Some nonhypertransitive operators | 2006-07-11 | Paper |
| Backward extensions of hyperexpansive operators | 2006-06-30 | Paper |
| Weakly \(n\)-hyponormal weighted shifts and their examples | 2006-06-16 | Paper |
| Sub-\(n\)-normal operators | 2006-06-16 | Paper |
| GAPS OF OPERATORS, II | 2006-03-13 | Paper |
| On Aluthge transforms of \(p\)-hyponormal operators | 2006-03-02 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5711321 | 2005-12-12 | Paper |
| DILATIONS FOR POLYNOMIALLY BOUNDED OPERATORS | 2005-11-21 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5705646 | 2005-11-09 | Paper |
| Weak* continuous characters on dual algebras | 2005-06-09 | Paper |
| Operators that admit a moment sequence | 2005-05-03 | Paper |
| Gaps of operators | 2005-04-18 | Paper |
| On quasinilpotent Operators, II | 2005-03-18 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4657691 | 2005-03-14 | Paper |
| Square roots of (BCP)-operators | 2004-10-05 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4818688 | 2004-10-01 | Paper |
| Complete contractivity of maps associated with the Aluthge and Duggal transforms. | 2004-09-16 | Paper |
| Backward extensions of subnormal operators | 2004-08-13 | Paper |
| Positive operator majorization and \(p\)-hyponormality | 2004-03-07 | Paper |
| The iterated Aluthge transform of an operator | 2004-02-19 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4447164 | 2004-02-03 | Paper |
| Embry truncated complex moment problem. | 2003-12-04 | Paper |
| Spectral properties of some operator matrices | 2003-07-08 | Paper |
| Moment sequences and backward extensions of subnormal weighted shifts | 2003-06-01 | Paper |
| A characterization of \(k\)-hyponormality via weak subnormality. | 2003-05-25 | Paper |
| On quasinilpotent operators | 2003-04-10 | Paper |
| Criteria for positively quadratically hyponormal weighted shifts | 2002-07-11 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4533148 | 2002-06-09 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2782747 | 2002-04-08 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2782753 | 2002-04-08 | Paper |
| Extensions and extremality of recursively generated weighted shifts | 2001-12-10 | Paper |
| Spectral pictures of Aluthge transforms of operators | 2001-09-09 | Paper |
| Quadratically hyponormal weighted shifts and their examples | 2001-06-18 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4950671 | 2001-05-21 | Paper |
| Quadratically hyponormal weighted shifts with two equal weights | 2001-05-21 | Paper |
| A formula for 𝑘-hyponormality of backstep extensions of subnormal weighted shifts | 2001-05-14 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2704587 | 2001-03-07 | Paper |
| Aluthge transforms of operators | 2000-12-03 | Paper |
| Cubically hyponormal weighted shifts and their examples | 2000-11-22 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4948243 | 2000-04-10 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4237064 | 1999-11-14 | Paper |
| Operator-valued typically real functions induced by a contraction | 1999-07-20 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4400729 | 1998-08-02 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4380205 | 1998-06-02 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4339626 | 1998-03-23 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4715136 | 1997-11-25 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4331958 | 1997-02-13 | Paper |
| Subclasses of univalent functions subordinate to convex functions | 1997-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4299823 | 1996-09-23 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4872588 | 1996-07-25 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4319940 | 1996-05-30 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4865561 | 1996-05-14 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4865339 | 1996-03-11 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4325663 | 1996-02-04 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4764786 | 1995-04-20 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4325662 | 1995-03-13 | Paper |
| On dilation theorems of operator algebras | 1995-01-03 | Paper |
| ISOMORPHISMS OF A2n(n) | 1994-09-15 | Paper |
| The Hardy space of analytic functions associated with certain one-parameter families of integral operators | 1993-09-05 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4022824 | 1993-01-17 | Paper |
| Dual operator algebras and a hereditary property of minimal isometric dilations | 1993-01-16 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3993707 | 1992-08-13 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3985968 | 1992-06-27 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3970620 | 1992-06-25 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3970622 | 1992-06-25 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3971187 | 1992-06-25 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3871423 | 1979-01-01 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4193971 | 1978-01-01 | Paper |
