Results 61 to 70 of about 3,060 (235)
Some rigidity aspects in von Neumann algebras and C*-algebras arising from groups [PDF]
, 2020 In the first part of my talk I will discuss the problems of reconstructing a countable discrete group from its von Neumann algebra (W*-superrigidity) and its reduced C*-algebra (C*-superrigidity) and I will survey several recent results in this ...
Chifan, Ionut
core
Type decomposition for von Neumann algebra embeddings [PDF]
, 1991 This paper establishes a type decomposition theory for embeddings of a von Neumann algebra A into a von Neumann algebra M, by studying projections in A that are semifinite (resp. abelian) relative to M.
Kaftal, Victor
core +1 more source
Subspace Acceleration for Efficient Nonlinear Water Wave Simulation
International Journal for Numerical Methods in Fluids, EarlyView.We introduce an exponentially weighted subspace acceleration technique to reduce GMRES iterations for solving the Poisson equation with time‐dependent coefficients in nonlinear, dispersive free‐surface flows governed by the incompressible Navier‐Stokes equations. The method significantly reduces memory requirements and computational complexity compared
Rasmus Kleist Hørlyck Sørensen +3 more
wiley +1 more source
A SURVEY ON MULTINORMED VON NEUMANN ALGEBRAS [PDF]
, 2017 The present paper is devoted to multinormed von Neumann algebras. We pick up basic facts on von Neumann algebras to introduce their locally convex versions. A key construction in this direction is a central topology of a von Neumann algebra.
Dosi, Anar
core
Heat Transfer, EarlyView.ABSTRACT Several engineering problems involve the need to model conjugate heat transfer processes considering the temperature‐dependence of the material properties. Consequently, a simulation tool capable of modeling this process is of great interest. In this context, the present work proposes a thermal lattice Boltzmann method (TLBM) for modeling the ...
Julia Akiko Sassa +2 more
wiley +1 more source
Absolutely compatible pairs in a von Neumann algebra [PDF]
, 2019 Let a, b be elements in a unital C∗-algebra with 0 ≤ a, b ≤ I. The element a is absolutely compatible with b if |a − b| + |I − a − b| = I. In this note, some technical characterizations of absolutely compatible pairs in an arbitrary von Neumann algebra ...
Jana, Nabin K. +2 more
core +1 more source
Entropy of Quantum Measurement
Entropy, 2015 A notion of entropy of a normal state on a finite von Neumann algebra in Segal’s sense is considered, and its superadditivity is proven together with a necessary and sufficient condition for its additivity.
Hanna Podsȩdkowska
doaj +1 more source
Amenability Constants for Unconditional Sums of Banach Algebras
Mathematische Nachrichten, EarlyView.ABSTRACT We study Johnson amenability for unconditional direct sums of Banach algebras. Given a family (Ai)i∈I$(A_i)_{i\in I}$ of Banach algebras and a Banach sequence lattice E$E$ on I$I$, the E$E$‐sum ⨁i∈IAiE${\bigl (\bigoplus _{i\in I} A_i\bigr)}_{\!E}$ carries a natural Banach algebra structure via coordinatewise multiplication.
Tomasz Kania, Jerzy Ka̧kol
wiley +1 more source
Symmetry, symmetry topological field theory and von Neumann algebra
Journal of High Energy PhysicsWe study the additivity and Haag duality of the von Neumann algebra of a quantum field theory $${\mathcal{T}}_{\mathcal{F}}$$ with 0-form (and the dual (d − 2)-form) (non)-invertible global symmetry $$\mathcal{F}$$ .
Qiang Jia, Jiahua Tian
doaj +1 more source
Some inequalities and majorization for products of τ-measurable operators
Journal of Inequalities and Applications, 2022 In this paper, for a semi-finite von Neumann algebra M $\mathcal{M}$ , we study the Young, Hölder and Heinz means inequalities and extend results for τ-measurable operators. We obtain some refinements of the those inequalities for τ-measurable operators.
Zahra Maleki Khouzani +1 more
doaj +1 more source