Results 151 to 160 of about 10,485 (179)
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Monoid and Topological Groupoid

Journal of the Indian Mathematical Society, 2018
<p>Here we introduce some new results which are relative to the concept of topological monoid-groupoid and prove that the category of topological monoid coverings of X is equivalent to the category covering groupoids of the monoid-groupoid <span lang="EN-US">&amp;#960;</span><span lang="EN-US">&lt;sub&gt;</span>
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Fibrations and topological monoids

2001
A continuous map p: X → Y has the lifting property with respect to a pair of topological spaces (Z, A) if for every commutative diagram of the form there exists a continuous map \(\Bbbk \) : Z → X such that pk = g and ki = f.
Yves Félix   +2 more
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Monoidal Topology

2014
Monoidal Topology describes an active research area that, after various past proposals on how to axiomatize 'spaces' in terms of convergence, began to emerge at the beginning of the millennium. It combines Barr's relational presentation of topological spaces in terms of ultrafilter convergence with Lawvere's interpretation of metric spaces as small ...
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Classifying Spaces of Topological Monoids and Categories

American Journal of Mathematics, 1984
This article explores homology and weak homotopy equivalences between classifying spaces of topological categories and discrete categories. Many recent results have dealt with this phenomenon: e.g. for any space X there is a discrete group and a homology equivalence BG\(\to X\) [\textit{D. Kan} and \textit{W.
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Topological Hopf Algebras and Braided Monoidal Categories

Applied Categorical Structures, 1998
Let \({\mathcal C}\) be a small monoidal category, \(K\) a Dedekind domain. The author first notes that any exact faithful monoidal functor from \({\mathcal C}\) to the category of finite rank projective \(K\)-modules factors through a functor from \({\mathcal C}\) to the category of continuous modules over a topological \(K\)-bialgebra \(A\).
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D'Alembert's functional equation on topological monoids

Publicationes Mathematicae Debrecen, 2009
The author proves that, if \(f\) is a continuous complex-valued function on the topological monoid \(M\) with neutral element \(e\) satisfying the functional equation \[ f(xyz)+f(xzy)=2f(x)f(yz)+2f(y)f(zx)+2f(z)f(xy)-4f(x)f(y)f(z) \] and \(f(e)=1\), then there is a continuous homomorphism \(h:M\rightarrow \text{Mat}_{2}\left(\mathbb{C}\right)\), the ...
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Characterization of a category for monoidal topology

Algebra universalis, 2015
This paper presents a characterization of the category of preordered sets and monotone maps that is similar to that of the category of topological spaces and continuous maps in terms of the Sierpinski object (Theorem 2.10), then the author lifts the characterization to the quantale-valued setting (Theorem 5.10).
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Retractions and retracts of free topological monoids

International Journal of Computer Mathematics, 2006
Some topological properties of retracts, semiretracts and retractions which make a link between the topological notion of a retract with its pure algebraic analogon in free monoids are presented.
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Topological acoustics

Nature Reviews Materials, 2022
Haoran Xue, Yihao Yang, Baile Zhang
exaly  

Topological materials discovery from crystal symmetry

Nature Reviews Materials, 2021
Benjamin J Wieder   +2 more
exaly  

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