Roman Drnovšek

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All published works

Action	Title	Year	Authors
+ PDF Chat	Positive self-commutators of positive operators	2025	Roman Drnovšek Marko Kandić
+	Commutators greater than a perturbation of the identity	2024	Roman Drnovšek Marko Kandić
+	On commutators of idempotents	2024	Roman Drnovšek
+	On the diagonal of Riesz operators on Banach lattices	2024	Roman Drnovšek Marko Kandić
+	Commutators greater than a perturbation of the identity	2023	Roman Drnovšek Marko Kandić
+	On commutators of idempotents	2023	Roman Drnovšek
+	On the diagonal of Riesz operators on Banach lattices	2022	Roman Drnovšek Marko Kandić
+ PDF Chat	Lower bounds for the spread of a nonnegative matrix	2021	Roman Drnovšek
+ PDF Chat	Operator norm and numerical radius analogues of Cohen's inequality	2020	Roman Drnovšek
+	Operator norm and numerical radius analogues of Cohen's inequality	2019	Roman Drnovšek
+	Sequences of bounds for the spectral radius of a positive operator	2019	Roman Drnovšek
+ PDF Chat	Triangularizability of families of polynomially compact operators	2019	Roman Drnovšek Marko Kandić
+	Operator norm and numerical radius analogues of Cohen's inequality	2019	Roman Drnovšek
+ PDF Chat	On order automorphisms of the effect algebra	2018	Roman Drnovšek
+ PDF Chat	Positive operators as commutators of positive operators	2018	Roman Drnovšek Marko Kandić
+ PDF Chat	A note on Huijsmans-de Pagter problem in ordered Banach algebras	2018	Roman Drnovšek
+	A note on Huijsmans-de Pagter problem in ordered Banach algebras	2018	Roman Drnovšek
+	On order automorphisms of the effect algebra	2018	Roman Drnovšek
+	A sharp inequality involving hyperbolic and inverse hyperbolic functions	2018	Roman Drnovšek
+	On order automorphisms of the effect algebra	2018	Roman Drnovšek
+	A note on Huijsmans-de Pagter problem in ordered Banach algebras	2018	Roman Drnovšek
+ PDF Chat	On algebras generated by positive operators	2017	Roman Drnovšek
+	Positive operators as commutators of positive operators	2017	Roman Drnovšek Marko Kandić
+	Positive operators as commutators of positive operators	2017	Roman Drnovšek Marko Kandić
+	Triangularizability of trace-class operators with increasing spectrum	2016	Roman Drnovšek
+ PDF Chat	Inequalities on the spectral radius and the operator norm of Hadamard products of positive operators on sequence spaces	2016	Roman Drnovšek Aljoša Peperko
+	Triangularizability of Families of Polynomially Compact Operators	2016	Roman Drnovšek Marko Kandić
+ PDF Chat	Ideal-triangularizability and commutators of constant sign	2016	Roman Drnovšek Marko Kandić
+	Triangularizability of Families of Polynomially Compact Operators	2016	Roman Drnovšek Marko Kandić
+ PDF Chat	When powers of a matrix coincide with its Hadamard powers	2015	Roman Drnovšek
+ PDF Chat	From local to global ideal-triangularizability	2013	Roman Drnovšek Marko Kandić
+	On the S-matrix conjecture	2013	Roman Drnovšek
+	On joint numerical radius II	2013	Roman Drnovšek Veronika Müller
+	The spread of the spectrum of a nonnegative matrix with a zero diagonal element	2013	Roman Drnovšek
+	The spread of the spectrum of a nonnegative matrix with a zero diagonal element	2013	Roman Drnovšek
+	On the S-matrix conjecture	2013	Roman Drnovšek
+	On semigroups of nonnegative functions and positive operators	2013	Roman Drnovšek Heydar Radjavi
+	The spread of the spectrum of a nonnegative matrix with a zero diagonal element	2013	Roman Drnovšek
+	On the S-matrix conjecture	2013	Roman Drnovšek
+ PDF Chat	The von Neumann entropy and unitary equivalence of quantum states	2012	Roman Drnovšek
+	A generalization of the Buzano inequality	2012	Mohammad Sal Moslehian Maryam Khosravi Roman Drnovšek
+	Once More on Positive Commutators	2012	Roman Drnovšek
+	The von Neumann entropy and unitary equivalence of quantum states	2012	Roman Drnovšek
+	On semigroups of matrices with nonnegative diagonals	2012	Grega Cigler Roman Drnovšek
+	On semigroups of matrices with nonnegative diagonals	2012	Grega Cigler Roman Drnovšek
+ PDF Chat	A commutator approach to Buzano’s inequality	2012	Maryam Khosravi Roman Drnovšek Mohammad Sal Moslehian
+ PDF Chat	Positive commutators and collections of operators	2012	Roman Drnovšek Martin Jesenko Marko Kandić
+ PDF Chat	Once more on positive commutators	2012	Roman Drnovšek
+	The von Neumann entropy and unitary equivalence of quantum states	2012	Roman Drnovšek
+	Once More on Positive Commutators	2012	Roman Drnovšek
+	On semigroups of matrices with nonnegative diagonals	2012	Grega Cigler Roman Drnovšek
+	An infinite-dimensional generalization of Zengerʼs lemma	2011	Roman Drnovšek
+	From local to global similarity of matrix groups	2011	Grega Cigler Roman Drnovšek
+	ON SEMITRANSITIVE JORDAN ALGEBRAS OF MATRICES	2011	Janez Bernik Roman Drnovšek Damjana Kokol Bukovšek Tomaž Košir Matjaž Omladič Heydar Radjavi
+	More on positive commutators	2010	Roman Drnovšek Marko Kandić
+	On the spectral radius of positive operators on Banach sequence spaces	2010	Roman Drnovšek Aljoša Peperko
+	Ideal-Triangularizability of Semigroups of Positive Operators	2009	Roman Drnovšek Marko Kandić
+	On positive commutators	2009	Janko Bračič Roman Drnovšek Yuliya B. Farforovskaya E. L. Rabkin Jaroslav Zemánek
+ PDF Chat	Invariant subspaces for operator semigroups with commutators of rank at most one	2009	Roman Drnovšek
+	Reducibility and triangularizability of semitransitive spaces of operators	2008	Janez Bernik Roman Drnovšek Damjana Kokol Bukovšek Tomaž Košir Matjaž Omladič
+	On positive unipotent operators on Banach lattices	2007	Roman Drnovšek
+ PDF Chat	Approximate permutability of traces on semigroups of matrices	2007	Janez Bernik Roman Drnovšek Tomaž Košir Leo Livshits Mitja Mastnak Matjaž Omladič Heydar Radjavi
+ PDF Chat	An operator is a product of two quasi-nilpotent operators if and only if it is not semi-Fredholm	2006	Roman Drnovšek Nika Novak Veronika Müller
+	Inequalities for the Hadamard Weighted Geometric Mean of Positive Kernel Operators on Banach Function Spaces	2006	Roman Drnovšek Aljoša Peperko
+	An operator is a product of two quasi-nilpotent operators if and only if it is not semi-Fredholm	2006	Roman Drnovšek Veronika Müller Nika Novak
+	SEMITRANSITIVE SUBSPACES OF MATRICES	2006	Janez Bernik Roman Drnovšek Don Hadwin Ali Jafarian Damjana Kokol Bukovšek Tomaž Košir Marjeta Kramar Fijavž Thomas J. Laffey Leo Livshits Mitja Mastnak
+	An operator is a product of two quasi-nilpotent operators if and only if it is not semi-Fredholm	2006	Roman Drnovšek Veronika Müller Nika Novak
+ PDF Chat	Common fixed points and common eigenvectors for sets of matrices	2005	Janez Bernik Roman Drnovšek Tomaž Košir Thomas J. Laffey G. MacDonald § R. Meshulam §§ Matjaž Omladič Hsu P
+ PDF Chat	Inequalities between f(‖A‖) and ‖f(\|A\|)‖	2005	Roman Drnovšek Tomaž Kosem
+	Irreducible operator semigroups such that AB and BA are proportional	2004	Roman Drnovšek Tomaž Košir
+ PDF Chat	A GENERALIZATION OF LEVINGER'S THEOREM TO POSITIVE KERNEL OPERATORS	2003	Roman Drnovšek
+	Irreducible semigroups of matrices with eigenvalue one	2003	Janez Bernik Roman Drnovšek Tomaž Košir Matjaž Omladič Heydar Radjavi
+	An irreducible semigroup of non-negative square-zero operators	2002	Roman Drnovšek Damjana Kokol Bukovšek Leo Livshits Gordon Macdonald Matjaž Omladič Heydar Radjavi
+	A characterization of commutators of idempotents	2002	Roman Drnovšek Heydar Radjavi Peter Rosenthal
+	Maximal dominated operator semigroups	2002	Roman Drnovšek Matjaž Omladič
+	Common invariant subspaces for collections of operators	2001	Roman Drnovšek
+	A generalization of the Ando--Krieger theorem	2001	Roman Drnovšek
+	Integral Equations and Operator Theory	2001	Roman Drnovšek
+ PDF Chat	Triangularizing semigroups of positive operators on an atomic normed Riesz Space	2000	Roman Drnovšek
+	Bounds for the spectral radius of positive operators	2000	Roman Drnovšek
+	On transitive linear semigroups	2000	Roman Drnovšek Leo Livshits Gordon Macdonald Ben Mathes Heydar Radjavi Peter Šemrl
+ PDF Chat	On operator bands	2000	Roman Drnovšek Leo Livshits Gordon Macdonald Ben Mathes Heydar Radjavi Peter Šemrl
+	Invariant Subspaces for Semigroups of Algebraic Operators	1998	Grega Cigler Roman Drnovšek Damjana Kokol Bukovšek Matjaž Omladič Thomas J. Laffey Heydar Radjavi Peter Rosenthal
+	On invariant subspaces of Volterra-type operators	1997	Roman Drnovšek
+ PDF Chat	On reducibility of semigroups of compact quasinilpotent operators	1997	Roman Drnovšek
+ PDF Chat	On quasispectral maximal subspaces of a class of Volterra-type operators	1997	Roman Drnovšek
+	Volterra kernel operators on Banach function spaces	1997	Roman Drnovšek
+ PDF Chat	An irreducible semigroup of idempotents	1997	Roman Drnovšek
+	An Operator Generalization of the Lo-Keng Hua Inequality	1995	Roman Drnovšek
+ PDF Chat	Parareductive Operators on Banach Spaces	1994	Roman Drnovšek
+	Spectral inequalities for compact integral operators on Banach function spaces	1992	Roman Drnovšek

Common Coauthors

Coauthor	Papers Together
Marko Kandić	16
Heydar Radjavi	10
Matjaž Omladič	9
Tomaž Košir	7
Janez Bernik	6
Grega Cigler	5
L. Livshits	5
Damjana Kokol Bukovšek	5
Veronika Müller	4
Nika Novak	3
Gordon Macdonald	3
Aljoša Peperko	3
Thomas J. Laffey	3
Peter Šemrl	2
Ben Mathes	2
Mohammad Sal Moslehian	2
Maryam Khosravi	2
Mitja Mastnak	2
Peter Rosenthal	2
Hsu P	1
Eric Nordgren	1
Don Hadwin	1
Ali Jafarian	1
Martin Jesenko	1
Yuliya B. Farforovskaya	1
Tomaž Kosem	1
Roy Meshulam	1
Jaroslav Zemánek	1
Marjeta Kramar Fijavž	1
Jan Okniński	1
Richard M. Timoney	1
E. L. Rabkin	1
G. MacDonald §	1
R. Meshulam §§	1
V. Muêller	1
A. R. Sourour	1
Janko Bračič	1

Commonly Cited References

Action	Title	Year	Authors	# of times referenced
+	Riesz Spaces II	1983	Adriaan C. Zaanen	13
+	Banach Lattices and Positive Operators	1974	Helmut Schaefer	12
+ PDF Chat	Triangularizing semigroups of positive operators on an atomic normed Riesz Space	2000	Roman Drnovšek	10
+	Irreducible compact operators	1986	B. de Pagter	9
+	Volterra Semigroups Have Invariant Subspaces	1999	Yu. V. Turovskii	8
+	On positive commutators	2009	Janko Bračič Roman Drnovšek Yuliya B. Farforovskaya E. L. Rabkin Jaroslav Zemánek	7
+	A nil algebra of bounded operators on Hilbert space with semisimple norm closure	1986	Donald W. Hadwin Eric Nordgren M. Radjabalipour Heydar Radjavi Peter Rosenthal	7
+ PDF Chat	A Hilbert Space Problem Book	1982	Paul R. Halmos	6
+ PDF Chat	Triangularizability of Polynomially Compact Operators	2005	Matjaž Konvalinka	6
+	An irreducible semigroup of non-negative square-zero operators	2002	Roman Drnovšek Damjana Kokol Bukovšek Leo Livshits Gordon Macdonald Matjaž Omladič Heydar Radjavi	5
+	Common invariant subspaces for collections of operators	2001	Roman Drnovšek	5
+	Ideal-Triangularizability of Semigroups of Positive Operators	2009	Roman Drnovšek Marko Kandić	5
+	On the spectral radius of positive operators	1992	Y. A. Abramovich Charalambos D. Aliprantis Owen Burkinshaw	4
+ PDF Chat	A Course in Functional Analysis.	1986	T. W. Gamelin John B. Conway	4
+	Structure of Commutators of Operators	1965	Arlen Brown Carl Pearcy	4
+	Invariant Subspace Theorems for Positive Operators	1994	Y. A. Abramovich Charalambos D. Aliprantis Owen Burkinshaw	4
+	The projection onto the center of operators in a Banach lattice	1988	J. Voigt	4
+ PDF Chat	The perron root of a weighted geometric mean of nonneagative matrices	1988	L. Elsner Charles R. Johnson J. A. Dias Da Silva	4
+	More on positive commutators	2010	Roman Drnovšek Marko Kandić	4
+	On spectral properties of positive operators	1993	Xiao‐Dong Zhang	4
+	Frobenius Theory of Positive Operators: Comparison Theorems and Applications	1970	Ivo Marek	3
+	Quasinilpotent Operators and the Invariant Subspace Problem	1997	C. J. Read	3
+	On commuting and semi-commuting positive operators	2014	Niushan Gao	3
+	Multiplicative coordinate functionals and ideal-triangularizability	2013	Marko Kandić	3
+ PDF Chat	On reducibility of semigroups of compact quasinilpotent operators	1997	Roman Drnovšek	3
+	Hilden's simple proof of Lomonosov's invariant subspace theorem	1977	Aileen Michaels	3
+ PDF Chat	A spectral problem in ordered Banach algebras	2003	S. Mouton	3
+ PDF Chat	Irreducible semigroups of functionally positive nilpotent operators	1995	Yong Zhong	3
+	Invariant Subspaces of Operators on lp-Spaces	1993	Y. A. Abramovich Charalambos D. Aliprantis Owen Burkinshaw	3
+	Inequalities for the Hadamard Weighted Geometric Mean of Positive Kernel Operators on Banach Function Spaces	2006	Roman Drnovšek Aljoša Peperko	3
+	Some Aspects of the Spectral Theory of Positive Operators	1992	Xiao‐Dong Zhang	3
+	A note on the joint spectral radius	1960	Gian‐Carlo Rota W. Gilbert Strang	3
+ PDF Chat	On the ideal-triangularizability of positive operators on Banach lattices	1997	Mohammed Taghi Jahandideh	3
+	Compact non-self-adjoint operators	1971	J. R. Ringrose	3
+	Spectral inequalities for compact integral operators on Banach function spaces	1992	Roman Drnovšek	3
+	Invariant subspaces of Volterra operators	1984	Victor S. Shulman	3
+	Introduction to the theory of linear nonselfadjoint operators	1969	M. Г. Крейн Israel Gohberg	2
+	On finite rank operators and preannihilators	1986	Edward A. Azoff	2
+	Real and Complex Analysis.	1987	G. A. Garreau Walter Rudin	2
+	Cones and Duality	2007	Charalambos D. Aliprantis Rabee Tourky	2
+ PDF Chat	On the local spectral radius in partially ordered Banach spaces	1999	Mirosława Zima	2
+	Irreducible semigroups of matrices with eigenvalue one	2003	Janez Bernik Roman Drnovšek Tomaž Košir Matjaž Omladič Heydar Radjavi	2
+ PDF Chat	Commutators which commute with one factor	1997	Helene Shapiro	2
+	Inequalities for the spectral radius of non-negative functions	2008	Aljoša Peperko	2
+	Representations and invariants of the classical groups	1998	Roe Goodman Nolan R. Wallach	2
+	Standard triangularization of semigroups of non-negative operators	2004	Gordon Macdonald Heydar Radjavi	2
+ PDF Chat	On majorization, factorization, and range inclusion of operators on Hilbert space	1966	R. G. Douglas	2
+	Limitations on the size of semigroups of matrices	2007	Heydar Radjavi Peter Rosenthal	2
+	An example on ordered Banach algebras	2007	Gerd Herzog Christoph Schmoeger	2
+	On algebras of polynomially compact operators	2015	Marko Kandić	2