Results 101 to 110 of about 3,060 (235)

Free W*-Dynamical Systems From p-Adic Number Fields and the Euler Totient Function

open access: yesMathematics, 2015
In this paper, we study relations between free probability on crossed product W * -algebras with a von Neumann algebra over p-adic number fields
Ilwoo Cho, Palle E. T. Jorgensen
doaj   +1 more source

Evolution of Classical and Quantum States in the Groupoid Picture of Quantum Mechanics

open access: yesEntropy, 2020
The evolution of states of the composition of classical and quantum systems in the groupoid formalism for physical theories introduced recently is discussed.
Florio M. Ciaglia   +3 more
doaj   +1 more source

A Matrix‐Free, Scalable, and Robust Implicit Material Point Method

open access: yesInternational Journal for Numerical Methods in Engineering, Volume 127, Issue 14, 30 July 2026.
ABSTRACT An implicit material point method is presented using a new dynamic relaxation solver, allowing for a simple and efficient quasi‐static formulation that may be readily implemented in existing explicit‐dynamic codes. The use of dynamic relaxation and aggregation is shown to produce an extremely robust material point method scheme, with good ...
Sam J. V. Sutcliffe   +5 more
wiley   +1 more source

An application of the Sakai's theorem to the characterization of H*-algebras

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1995
The well-known Sakai's theorem, which states that every derivation acting on a von Neumann algebra is inner, is ,used to obtain a new elegant proof of the Saworotnow's characterization theorem for associative H*-algebras via two-sided H*-algebras.
Borut Zalar
doaj   +1 more source

Surface and Boundary Corrections in Peridynamics Using Optimized Nodal Influence Weights

open access: yesInternational Journal for Numerical Methods in Engineering, Volume 127, Issue 14, 30 July 2026.
ABSTRACT Peridynamics (PD), similarly to some other nonlocal continuum theories, exhibits truncated interaction horizons near free surfaces, cracks, and voids in bounded domains. This loss of neighbors causes artificial surface effects and inconsistencies in the derivative and energy operators that persist under discretization refinement, limiting PD ...
Arman Shojaei   +5 more
wiley   +1 more source

Von Neumann group algebras and type analysis [PDF]

open access: yes, 2023
Master of Science in Mathematics, North-West University, Potchefstroom CampusAny locally compact group G admits a left (resp. right) translation invariant measure, called a left (resp. right) Haar measure.
Pretorius, Christiaan
core   +1 more source

A generalized Hölder-type inequalities for measurable operators

open access: yesJournal of Inequalities and Applications, 2020
We prove a generalized Hölder-type inequality for measurable operators associated with a semi-finite von Neumann algebra which is a generalization of the result shown by Bekjan (Positivity 21:113–126, 2017).
Yazhou Han, Jingjing Shao
doaj   +1 more source

A Hybrid‐High Order Method for Fracture Modelling

open access: yesInternational Journal for Numerical Methods in Engineering, Volume 127, Issue 13, 15 July 2026.
ABSTRACT In this work we introduce a new Hybrid High‐Order method for the numerical simulation of fracture propagation based on phase‐field models. The proposed method: supports general meshes made of polygonal/polyhedral elements, which provides great flexibility in mesh design and adaptation; can accommodate large variations of both the displacement ...
Alessandra Crippa   +4 more
wiley   +1 more source

Derivations with values into ideals of a semifinite von Neumann algebra [PDF]

open access: yes, 2019
One of the classic problems in operator algebra theory is the question whether every derivation from an algebra N into an N-bimodule J is automatically inner. In the present thesis, we study derivations with values into ideals of a semifinite von Neumann
Huang, Jinghao
core   +2 more sources

Style‐Constrained Inverse Design of Microstructures With Tailored Mechanical Properties Using Unconditional Diffusion Models

open access: yesInternational Journal for Numerical Methods in Engineering, Volume 127, Issue 13, 15 July 2026.
ABSTRACT Deep generative models, particularly denoising diffusion models, have achieved remarkable success in high‐fidelity generation of architected microstructures with desired properties and styles. However, these recent methods typically rely on conditional training mechanisms that require extensive labeled data.
Weipeng Xu   +5 more
wiley   +1 more source

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