Results 41 to 50 of about 102 (82)

Approximate Isomorphism of Metric Structures

, 2022
We give a formalism for approximate isomorphism in continuous logic simultaneously generalizing those of two papers by Ben Yaacov and by Ben Yaacov, Doucha, Nies, and Tsankov, which are largely incompatible.
Hanson, James
core  

Fixed Point Theorems, Coincidence Point Theorems and Their Applications [PDF]

, 2016
This study aims to illuminate a general framework for fixed point and coincidence point theorems. Our theorems work with functions defined on ball spaces (X,\cB).
Sonaallah, Fatma 1986-
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Analytic equivalence relations and bi-embeddability

, 2011
Louveau and Rosendal [5] have shown that the relation of bi-embeddability for countable graphs as well as for many other natural classes of countable structures is complete under Borel reducibility for analytic equivalence relations.
Luca Motto Ros, Sy-David Friedman, Motto Ros, Luca, Friedman, Sy-David   +3 more
core   +1 more source

A p-Adic Model of Quantum States and the p-Adic Qubit. [PDF]

Entropy (Basel), 2022
Aniello P, Mancini S, Parisi V.
europepmc   +1 more source

(N, ε)-pseudospectra of bounded linear operators on ultrametric Banach spaces

Gulf Journal of Mathematics
In this paper, we prove that the essential pseudospectrum of bounded linear operator pencils is invariant under perturbation of completely continuous linear operators on ultrametric Banach spaces over a spherically complete field K and we establish a characterization of the essential pseudospectrum of a bounded linear operator pencils by means of the ...
openaire   +1 more source

p-adic vertex operator algebras. [PDF]

Res Number Theory, 2023
Franc C, Mason G.
europepmc   +1 more source

Hierarchical Wilson-Cowan Models and Connection Matrices. [PDF]

Entropy (Basel), 2023
Zúñiga-Galindo WA, Zambrano-Luna BA.
europepmc   +1 more source

Characterization of metric spaces whose free space is isometric to $\ell_1$

, 2016
International audienceWe characterize metric spaces whose Lipschitz free space is isometric to $\ell_1$. In particular, the Lipschitz free space over an ultrametric space is not isometric to $\ell_1(\Gamma)$ for any set $\Gamma$.
Dalet, Aude, Prochazka, Antonin, Kaufmann, Pedro L.   +2 more
core  

A Converse of the Banach Contraction Mapping Theorem

, 2001
We prove a type of converse of the Banach contraction mapping theorem for metric spaces: if X is a T1 topological space and f: X -\u3e X is a function with the unique fixed point a such that fn(x) converges to a for each x is a member of X, then there ...
Hitzler, Pascal, Seda, Anthony K.
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Representation of bilinear forms in non-Archimedean Hilbert space by linear operators [PDF]

, 2006
summary:The paper considers representing symmetric, non-degenerate, bilinear forms on some non-Archimedean Hilbert spaces by linear operators. Namely, upon making some assumptions it will be shown that if $\phi $ is a symmetric, non-degenerate bilinear ...
Diagana, Toka
core