Atsushi Uchiyama

Available identifiers

zbMath Open uchiyama.atsushiMaRDI QIDQ471955

List of research outcomes

Publication	Date of Publication	Type
Remarks on n-normal operators	2022-07-04	Paper
An indefinite range inclusion theorem for triplets of bounded linear operators on a Hilbert space	2021-05-14	Paper
Spectrum of class p-wA(s, t) operators	2017-04-25	Paper
https://portal.mardi4nfdi.de/entity/Q3179633	2016-12-19	Paper
https://portal.mardi4nfdi.de/entity/Q2932039	2014-11-28	Paper
Superadditivity and derivative of operator functions	2014-11-17	Paper
A NOTE ON ∗-PARANORMAL OPERATORS AND RELATED CLASSES OF OPERATORS	2014-05-08	Paper
https://portal.mardi4nfdi.de/entity/Q5746560	2014-02-07	Paper
Corrigendum to “Bishop's property ( β ) for paranormal operators” [Operators and Matrices 3 (2009), 517-524, Atsushi Uchiyama, Kotaro Tanahashi and “SVEP and Bishop's property ( β ) for k*-paranormal operators” [Operators and Matrices 5 (2011), 469-472], Naim L. Braha, Kotaro Tanahashi]	2014-01-07	Paper
https://portal.mardi4nfdi.de/entity/Q2842091	2013-07-31	Paper
https://portal.mardi4nfdi.de/entity/Q3116905	2012-02-14	Paper
Bishop's property (β) for paranormal operators	2010-03-30	Paper
An extension of the Fuglede-Putnam's theorem to class A operators	2010-03-11	Paper
Conditions implying self-adjointness of operators	2009-10-19	Paper
Quasinilpotent Part of class A or (p, k)-quasihyponormal Operators	2009-03-11	Paper
https://portal.mardi4nfdi.de/entity/Q3605647	2009-02-24	Paper
FUGLEDE-PUTNAM THEOREM FOR p-HYPONORMAL OR CLASS y OPERATORS	2007-08-28	Paper
On \(p\)-quasihyponormal operators	2006-07-06	Paper
On the isolated points of the spectrum of paranormal operators	2006-06-16	Paper
https://portal.mardi4nfdi.de/entity/Q3023562	2005-07-05	Paper
Isolated points of spectrum of (\(p,k\))-quasihyponormal operators	2004-08-06	Paper
The \(\sigma\)-convexity of all bounded convex sets in \(\mathbb{R}^n\) and \(\mathbb{C}^n\)	2004-06-18	Paper
An example of non-reducing eigenspace of a paranormal operator	2004-03-29	Paper
On p-quasihyponormal operators and quasisimilarity	2003-01-01	Paper
https://portal.mardi4nfdi.de/entity/Q4329823	2002-05-15	Paper
Weyl's Theorem for Class A Operators	2002-05-09	Paper
Weyl's theorem for p-hyponormal or M-hyponormal operators	2002-05-05	Paper
A remark of the numerical ranges of operators on Hilbert spaces.	2002-01-01	Paper
https://portal.mardi4nfdi.de/entity/Q4800200	2002-01-01	Paper
On the class \(\mathcal Y\) operators	2001-02-18	Paper
The Furuta inequality in Banach $*$-algebras	2000-05-22	Paper
https://portal.mardi4nfdi.de/entity/Q4948238	2000-04-10	Paper
Inequalities of Putnam and Berger-Shaw for \(p\)-quasihyponormal operators	2000-02-23	Paper
https://portal.mardi4nfdi.de/entity/Q4702995	1999-12-14	Paper
Berger-Shaw's theorem for \(p\)-hyponormal operators	1999-11-14	Paper
https://portal.mardi4nfdi.de/entity/Q4484828	1999-01-01	Paper

Research outcomes over time

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