Results 11 to 20 of about 66 (65)
Code generation approaches for parallel geometric multigrid solvers
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2020 Software development for applications in computational science and engineering has become complex in recent years. This is mainly due to the increasing parallelism and heterogeneity in modern computer architectures and to the more realistic physical and ...
Köstler Harald +5 more
doaj +1 more source
Amenability and coamenability of algebraic quantum groups
International Journal of Mathematics and Mathematical Sciences, Volume 31, Issue 10, Page 577-601, 2002., 2002 We define concepts of amenability and coamenability for algebraic quantum groups in the sense of Van Daele (1998). We show that coamenability of an algebraic quantum group always implies amenability of its dual. Various necessary and/or sufficient conditions for amenability or coamenability are obtained.
Erik Bédos +2 more
wiley +1 more source
Analysis of the energy decay of a viscoelasticity type equation
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2016 In this paper, we study the evolution of the energy density of a sequence of solutions of a problem related to a viscoelasticity model where the viscosity term is a pseudo-differential operator of order 2α with α ∈ (0, 1).
Atallah-Baraket Amel, Trabelsi Maryem
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New aspects in polygroup theory
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2020 The aim of this paper is to compute the commutativity degree in polygroup’s theory, more exactly for the polygroup PG and for extension of polygroups by polygroups, obtaining boundaries for them.
Sonea Andromeda Cristina
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Completely positive linear operators for Banach spaces
International Journal of Mathematics and Mathematical Sciences, Volume 17, Issue 1, Page 27-30, 1994., 1992 Using ideas of Pisier, the concept of complete positivity is generalized in a different direction in this paper, where the Hilbert space ℋ is replaced with a Banach space and its conjugate linear dual. The extreme point results of Arveson are reformulated in this more general setting.
Mingze Yang
wiley +1 more source
A remark on the slice map problem
International Journal of Mathematics and Mathematical Sciences, Volume 17, Issue 2, Page 401-404, 1994., 1993 It is shown that there exist a σ‐weakly closed operator algebra , generated by finite rank operators and a σ‐weakly closed operator algebra generated by compact operators such that the Fubini product contains properly .
Muneo Chō, Tadasi Huruya
wiley +1 more source
Twisted duality of the CAR-algebra [PDF]
, 2002 22 pages, no figures.-- MSC2000 codes: 46L05, 46L65.-- PACS nr.: 02.10.-v.MR#: MR1915649 (2003d:46067)Zbl#: Zbl 1060.46040We give a complete proof of the twisted duality property M(q)'= Z M(q perp) Z* of the (self-dual) CAR-Algebra in any Fock ...
Lledó, Fernando +6 more
core +1 more source
Extremal problems for completely positive maps
International Journal of Mathematics and Mathematical Sciences, Volume 17, Issue 3, Page 607-608, 1994., 1993 In this note, we study the faces of some convex subsets of CPc(A, B(ℋ))(the continuous completely positive linear maps from pro‐C*‐algebra A to B(ℋ)).
Mingze Yang
wiley +1 more source
K-theory for C*-algebras: The hexagonal exact sequence
, 2020 The aim of this work is to introduce the reader to C*-algebraic K-theory whilst proving two of its main known results: Bott periodicity and the hexagonal exact sequence.
Vilalta Vila, Eduard
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Separable injectivity and C*‐tensor products
International Journal of Mathematics and Mathematical Sciences, Volume 14, Issue 1, Page 139-147, 1991., 1991 Let A and B be C*‐algebras and let D be a C*‐subalgebra of B. We show that if D is separably injective then the triple (A, B, D) verifies the slice map conjecture. As an application, we prove that the minimal C*‐tensor product A ⊗ B is separably injective if and only if both A and B are separably injective and either A or B is finite‐dimensional.
Tadasi Huruya, Seung-Hyeok Kye
wiley +1 more source