Results 31 to 40 of about 142,440 (280)

Coalgebraic Geometric Logic: Basic Theory [PDF]

open access: yesLogical Methods in Computer Science, 2022
Using the theory of coalgebra, we introduce a uniform framework for adding modalities to the language of propositional geometric logic. Models for this logic are based on coalgebras for an endofunctor on some full subcategory of the category of ...
Nick Bezhanishvili   +2 more
doaj   +1 more source

Topological superconductors and category theory [PDF]

open access: yes, 2017
Abstract A pedagogical introduction to topologically ordered states of matter is given, with the aim of familiarizing the reader with their axiomatic topological quantum field theory description. Basic non-interacting topological phases of matter protected by symmetries are introduced, including the Su–Schrieffer–Heeger model and the one-
Bernevig, Andrei, Neupert, Titus
openaire   +2 more sources

On Extension Of Functors [PDF]

open access: yes, 2011
A.Chigogidze defined for each normal functor on the category Comp an extension which is a normal functor on the category Tych. We consider this extension for any functor on the category Comp and investigate which properties it preserves from the ...
Karchevska, Lesya, Radul, Taras
core   +2 more sources

From gauge to higher gauge models of topological phases

open access: yesJournal of High Energy Physics, 2018
We consider exactly solvable models in (3+1)d whose ground states are described by topological lattice gauge theories. Using simplicial arguments, we emphasize how the consistency condition of the unitary map performing a local change of triangulation is
Clement Delcamp, Apoorv Tiwari
doaj   +1 more source

Category of Fuzzy Topological Polygroups

open access: yesInternational Journal of Analysis and Applications, 2016
In this paper, the relation between two definitions of a fuzzy topological polygroup is discussed. The collection of all fuzzy continuous functions from a fuzzy topological space Y to a fuzzy topological polygroup Z, denoted by FC(Y,Z) induces a ...
N. Abbasizadeh, B. Davvaz
doaj   +2 more sources

Topological categories

open access: yesTopology and its Applications, 1984
The investigation of topological resp. initially complete categories is a central topic of categorical topology. The article under review, a survey of the theory of initially complete categories, is a well written, highly stimulating supplement to the reviewers survey article 'Categorical topology 1971-1981' [ Proc. 5th Prague Topol. Symp.
openaire   +1 more source

Categorically closed topological groups

open access: yes, 2017
Let $\mathcal C$ be a subcategory of the category of topologized semigroups and their partial continuous homomorphisms. An object $X$ of the category ${\mathcal C}$ is called ${\mathcal C}$-closed if for each morphism $f:X\to Y$ of the category ...
Banakh, Taras
core   +2 more sources

On classes of T0 spaces admitting completions

open access: yesApplied General Topology, 2003
For a given class X of T0 spaces the existence of a subclass C, having the same properties that the class of complete metric spaces has in the class of all metric spaces and non-expansive maps, is investigated.
Eraldo Giuli
doaj   +1 more source

The notions of closedness and D-connectedness in quantale-valued approach spaces [PDF]

open access: yesCategories and General Algebraic Structures with Applications, 2020
In this paper, we characterize local $T_{0}$ and $T_{1}$ quantale-valued gauge spaces, show how these concepts are related to each other and apply them to $mathcal{L}$-approach distance spaces and $mathcal{L}$-approach system spaces. Furthermore, we give
Muhammad Qasim, Samed Özkan
doaj  

The Morita equivalence between parametrized spectra and module spectra

open access: yes, 2017
We give a Quillen equivalence between May and Sigurdsson's model category of parametrized spectra over BG, and Mandell, May, Schwede, and Shipley's model category of modules over the orthogonal ring spectrum \Sigma^\infty_+ G, for each topological group ...
Lind, John A., Malkiewich, Cary
core   +1 more source

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