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Displaying 3841 – 3860 of 13227

Extremely non-complex Banach spaces

Miguel Martín, Javier Merí (2011)

Open Mathematics

A Banach space X is said to be an extremely non-complex space if the norm equality ∥Id +T 2∥ = 1+∥T 2∥ holds for every bounded linear operator T on X. We show that every extremely non-complex Banach space has positive numerical index, it does not have an unconditional basis and that the infimum of diameters of the slices of its unit ball is positive.

Extremely Non-Nice Operators into CK and Continuous Mappings into the Hilbert Cube.

S. Koppelberg, P. Greim (1984/1985)

Mathematische Zeitschrift

F. Riesz a matematika dvacátého století

Ivan Netuka, Jiří Veselý (1980)

Pokroky matematiky, fyziky a astronomie

Faces complémentables dans un cône

Alain Goullet de Rugy (1970/1971)

Séminaire Choquet. Initiation à l'analyse

Facial Structure of the Sum of Two Compact Convex Sets.

A.K. Roy (1972)

Mathematische Annalen

Facial structures of separable and PPT states

Seung-Hyeok Kye (2011)

Banach Center Publications

A positive semi-definite block matrix (a state if it is normalized) is said to be separable if it is the sum of simple tensors of positive semi-definite matrices. A state is said to be entangled if it is not separable. It is very difficult to detect the border between separable and entangled states. The PPT (positive partial transpose) criterion tells us that the partial transpose of a separable state is again positive semi-definite, as was observed by M. D. Choi in 1982 from...

Facial Topologies for Subspaces of C(X).

Eggert Briem (1974)

Mathematische Annalen

Facteurs de type III

Alain Guichardet (1966/1968)

Séminaire Bourbaki

Factor representations of diffeomorphism groups

Robert P. Boyer (2003)

Studia Mathematica

We give a new construction of semifinite factor representations of the diffeomorphism group of euclidean space. These representations are in canonical correspondence with the finite factor representations of the inductive limit unitary group. Hence, many of these representations are given in terms of quasi-free representations of the canonical commutation and anti-commutation relations. To establish this correspondence requires a generalization of complete positivity as developed in operator algebras....

Factorable and strictly singular operators in a product space

Horacio Porta (1971)

Studia Mathematica

Factoriality and Connes' invariant T(M) for free products of von Neumann algebras.

Kenneth J. Dykema (1994)

Journal für die reine und angewandte Mathematik

Factoriality of von Neumann algebras connected with general commutation relations-finite dimensional case

Ilona Królak (2006)

Banach Center Publications

We study a certain class of von Neumann algebras generated by selfadjoint elements $ω_{i} = a_{i} + a ⁺_{i}$ , where $a_{i}, a ⁺_{i}$ satisfy the general commutation relations: $a_{i} a ⁺_{j} = \sum_{r, s} t_{j}^{i} r_{s} a ⁺_{r} a_{s} + δ_{i j} I d$ . We assume that the operator T for which the constants $t_{j}^{i} r_{s}$ are matrix coefficients satisfies the braid relation. Such algebras were investigated in [BSp] and [K] where the positivity of the Fock representation and factoriality in the case of infinite dimensional underlying space were shown. In this paper we prove that under certain conditions on the number of generators...

Factoring Operators Through Banach Lattices Not Containing C(0, 1).

N. Ghoussoub, W.B. Johnson (1987)

Mathematische Zeitschrift

Factoring Operators through c0 .

Jean Dazord (1976)

Mathematische Annalen

Factoring Rosenthal operators.

Teresa Alvarez (1988)

Publicacions Matemàtiques

In this paper we show that a Rosenthal operator factors through a Banach space containing no isomorphs of l1.

We review several results on interpolation of Banach algebras and factorization of weakly compact homomorphisms. We also establish a new result on interpolation of multilinear operators.

Factorisation des applications $Λ p$ -sommantes

P. Assouad (1973/1974)

Séminaire Analyse fonctionnelle (dit "Maurey-Schwartz")

Factorisation des isomorphies d’ordre des espaces $L^{p}$

Marouan Ajlani (1969/1970)

Séminaire Choquet. Initiation à l'analyse

Currently displaying 3841 – 3860 of 13227

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Displaying 3841 – 3860 of 13227

Extremely non-complex Banach spaces

Extremely Non-Nice Operators into CK and Continuous Mappings into the Hilbert Cube.

F. Riesz a matematika dvacátého století

Faces complémentables dans un cône

Facial Structure of the Sum of Two Compact Convex Sets.

Facial structures of separable and PPT states

Facial Topologies for Subspaces of C(X).

Facteurs de type III

Factor representations of diffeomorphism groups

Factorable and strictly singular operators in a product space

Factoriality and Connes' invariant T(M) for free products of von Neumann algebras.

Factoriality of von Neumann algebras connected with general commutation relations-finite dimensional case

Factoring Operators Through Banach Lattices Not Containing C(0, 1).

Factoring Operators through c0 .

Factoring Rosenthal operators.

Factoring the identity operator on a subspace of $l_{n}^{\infty}$

Factoring unconditionally converging operators

Factoring weakly compact homomorphisms, interpolation of Banach algebras and multilinear interpolation

Factorisation des applications $Λ p$ -sommantes

Factorisation des isomorphies d’ordre des espaces $L^{p}$

Currently displaying 3841 – 3860 of 13227