The von Neumann minimax theorem revisited
Hichem Ben-El-Mechaiekh, Robert Dimand (2007)
Banach Center Publications
Similarity:
Hichem Ben-El-Mechaiekh, Robert Dimand (2007)
Banach Center Publications
Similarity:
Helen Strassberg, Sheldon Rothman (1981)
Mathematische Zeitschrift
Similarity:
Jan Chabrowski, Jianfu Yang (2005)
Annales Polonici Mathematici
Similarity:
We establish the existence of multiple solutions of an asymptotically linear Neumann problem. These solutions are obtained via the mountain-pass principle and a local minimization.
Otto Moeschlin (2006)
Banach Center Publications
Similarity:
J. Chabrowski (2007)
Colloquium Mathematicae
Similarity:
We investigate the solvability of the linear Neumann problem (1.1) with L¹ data. The results are applied to obtain existence theorems for a semilinear Neumann problem.
H. Woźniakowski (1971)
Applicationes Mathematicae
Similarity:
Peter A. Linnell (1993)
Forum mathematicum
Similarity:
Ernest Płonka (1997)
Annales Polonici Mathematici
Similarity:
We present a new approach to determining supports of extreme, normed by 1, positive definite class functions of discrete groups, i.e. characters in the sense of E. Thoma [8]. Any character of a group produces a unitary representation and thus a von Neumann algebra of linear operators with finite normal trace. We use a theorem of H. Umegaki [9] on the uniqueness of conditional expectation in finite von Neumann algebras. Some applications and examples are given.
Michael Skeide (2006)
Banach Center Publications
Similarity:
The category of von Neumann correspondences from 𝓑 to 𝓒 (or von Neumann 𝓑-𝓒-modules) is dual to the category of von Neumann correspondences from 𝓒' to 𝓑' via a functor that generalizes naturally the functor that sends a von Neumann algebra to its commutant and back. We show that under this duality, called commutant, Rieffel's Eilenberg-Watts theorem (on functors between the categories of representations of two von Neumann algebras) switches into Blecher's Eilenberg-Watts theorem...
Ky Fan (1987)
Mathematische Zeitschrift
Similarity:
Robert Pluta, Bernard Russo (2015)
Studia Mathematica
Similarity:
It is well known that every derivation of a von Neumann algebra into itself is an inner derivation and that every derivation of a von Neumann algebra into its predual is inner. It is less well known that every triple derivation (defined below) of a von Neumann algebra into itself is an inner triple derivation. We examine to what extent all triple derivations of a von Neumann algebra into its predual are inner. This rarely happens but it comes close. We prove a (triple)...
Peng Lizhong (1987)
Mathematica Scandinavica
Similarity:
Giovanni Panti (2011)
Acta Arithmetica
Similarity:
Marc A. Rieffel (1981)
Mathematische Annalen
Similarity:
Herbert Halpern (1978)
Mathematica Scandinavica
Similarity:
T. V. Panchapagesan (1993)
Extracta Mathematicae
Similarity:
Holt, Derek F., Rees, Sarah (1992)
Experimental Mathematics
Similarity: