Results 51 to 60 of about 14,642,230 (161)

A categorical interpretation of continuous orbit equivalence for partial dynamical systems

Bulletin of the London Mathematical Society, Volume 57, Issue 12, Page 3637-3656, December 2025.
Abstract We define the orbit morphism of partial dynamical systems and prove that an orbit morphism being an isomorphism in the category of partial dynamical systems and orbit morphisms is equivalent to the existence of a continuous orbit equivalence between the given partial dynamical systems that preserves the essential stabilisers. We show that this
Gilles G. de Castro, Eun Ji Kang
wiley   +1 more source

On amorphic C-algebras

Journal of Mathematical Sciences, 2007
An amorphic association scheme has the property that any of its fusion is also an association scheme. In this paper we generalize the property to be amorphic to an arbitrary C-algebra and prove that any amorphic C-algebra is determined up to isomorphism by the multiset of its degrees and an additional integer equal 1 or -1.
Ponomarenko, I. N., Rahnamai, Barghi A.
openaire   +3 more sources

MUMOTT: a Python package for the analysis of multi‐modal tensor tomography data

Journal of Applied Crystallography, Volume 58, Issue 5, Page 1834-1845, October 2025.
The MUMOTT Python package facilitates the analysis of small‐ and wide‐angle X‐ray scattering tensor tomography data, using CPU and GPU acceleration to simplify complex computational tasks. Designed for ease of use, extensibility and efficiency, MUMOTT aims to lower barriers to adopting tensor tomography methods within the wider research community.Small‐
Leonard C. Nielsen, Mads Carlsen, Sici Wang, Arthur Baroni, Torne Tänzer, Marianne Liebi, Paul Erhart   +6 more
wiley   +1 more source

Masking Ability of CAD‐CAM Materials at Different Thicknesses: A Study on Color, Translucency, and Infinite Optical Thickness

Journal of Esthetic and Restorative Dentistry, Volume 37, Issue 9, Page 2134-2143, September 2025.
ABSTRACT Objective To evaluate the masking ability of different thicknesses of CAD‐CAM resin‐matrix and feldspar porcelain materials. Materials and Methods Specimens (Ø7.5 mm, thickness 0.5, 1.0, and 1.5 mm, n = 3/material) were fabricated from Lava Ultimate‐LU, Grandio Blocs‐GB, VITA Enamic‐VE, and VITA Mark II‐VM.
Bruno Arruda Mascaro, Maria Tejada‐Casado, Renata Garcia Fonseca, Juan C. Cardona, José Maurício dos Santos Nunes Reis, María M. Pérez   +5 more
wiley   +1 more source

FRAÏSSÉ LIMITS OF C*-ALGEBRAS [PDF]

The Journal of Symbolic Logic, 2016
AbstractWe realize the Jiang-Su algebra, all UHF algebras, and the hyperfinite II1factor as Fraïssé limits of suitable classes of structures. Moreover by means of Fraïssé theory we provide new examples of AF algebras with strong homogeneity properties.
Christopher J. Eagle, Ilijas Farah, Bradd Hart, Boris Kadets, Vladyslav Kalashnyk, Martino Lupini   +5 more
openaire   +3 more sources

Taking limits in topological recursion

Journal of the London Mathematical Society, Volume 112, Issue 3, September 2025.
Abstract When does topological recursion applied to a family of spectral curves commute with taking limits? This problem is subtle, especially when the ramification structure of the spectral curve changes at the limit point. We provide sufficient (straightforward‐to‐use) conditions for checking when the commutation with limits holds, thereby closing a ...
Gaëtan Borot, Vincent Bouchard, Nitin Kumar Chidambaram, Reinier Kramer, Sergey Shadrin   +4 more
wiley   +1 more source

On commutativity of C*-algebras [PDF]

Glasgow Mathematical Journal, 1987
Two numerical characterizations of commutativity for C*-algebra (acting on the Hilbert space H) were given in [1]; one used the norms of self-adjoint operators in (Theorem 2), and the other the numerical index of (Theorem 3). In both cases the proofs were based on the result of Kaplansky which states that if the only nilpotent operator in is 0 ...
openaire   +2 more sources

Parity of ranks of Jacobians of curves

Proceedings of the London Mathematical Society, Volume 131, Issue 3, September 2025.
Abstract We investigate Selmer groups of Jacobians of curves that admit an action of a non‐trivial group of automorphisms, and give applications to the study of the parity of Selmer ranks. Under the Shafarevich–Tate conjecture, we give an expression for the parity of the Mordell–Weil rank of an arbitrary Jacobian in terms of purely local invariants ...
Vladimir Dokchitser, Holly Green, Alexandros Konstantinou, Adam Morgan   +3 more
wiley   +1 more source

Closed equivalence relations on compact spaces and pairs of commutative C*-algebras: a Categorical Approach

Visnik Harkivsʹkogo Nacionalʹnogo Universitetu im. V.N. Karazina. Cepiâ Matematika, Prikladna Matematika i Mehanika
In this paper, we study a categorical extension of the classical Gelfand-Naimark duality between compact Hausdorff spaces and commutative unital C*-algebras.
Роман Скуріхін, Сергій Гефтер, Євген Каролінський   +2 more
doaj   +1 more source

Subspaces of C∗-algebras

Journal of Functional Analysis, 1988
Let V be a vector space over the complex numbers C and let \(M_ n(V)=V\otimes M_ n(C)\) denote the vector space of \(n\times n\) matrices \([v_{ij}]\) with entries in V. Let \(A[v_{ij}]=[\sum_{k}a_{ik}v_{kj}]\) and \([v_{ij}]A-[\sum a_{kj}v_{ik}]\) for \([v_{ij}]\) in \(M_ n(V)\) and \(A=[a_{ij}]\) in M(C). If \(v\in M_ n(V)\) and \(\omega \in M_ m(V)\)
openaire   +1 more source