Results 21 to 30 of about 110,236 (220)

Twisted separability for adjoint functors

open access: green, 2023
Twisted separable functors generalize the separable functors of Nastasescu, Van den Bergh and Van Oystaeyen, and provide a convenient tool to compare various projective dimensions. We discuss when an adjoint functor is twisted separable, obtaining a version of Rafael's Theorem in the twisted case.
Julien Bichon
openalex   +5 more sources

Cubical Sets and Trace Monoid Actions [PDF]

open access: yesThe Scientific World Journal, 2013
This paper is devoted to connections between trace monoids and cubical sets. We prove that the category of trace monoids is isomorphic to the category of generalized tori and it is a reflective subcategory of the category of cubical sets.
Ahmet A. Husainov
doaj   +2 more sources

Varieties of topological groups and left adjoint functors [PDF]

open access: bronzeJournal of the Australian Mathematical Society, 1973
In [6] and [2] Markov and Graev introduced their respective concepts of a free topological group. Graev's concept is more general in the sense that every Markov free topological group is a Graev free topological group. In fact, if FG(X) is the Graev free
Sidney A. Morris
openalex   +2 more sources

The Adjoints of the Schur Functor [PDF]

open access: yesarXiv, 2016
We show that the left and right adjoint of the Schur functor can be expressed in terms of the monoidal structure of strict polynomial functors. Using this result we give a necessary and sufficient condition for when the tensor product of two simple strict polynomial functors is again simple.
arxiv   +3 more sources

An Interpolation Theorem for Adjoint Functors [PDF]

open access: bronzeProceedings of the American Mathematical Society, 1970
0. Introduction. In this paper we present a category theoretic generalization of the construction of the tensor algebra or symmetric algebra of a module which proceeds by representing the module as the quotient of the free module on the underlying set of the given module by its module of relations, then obtaining the tensor algebra as the quotient of ...
S. A. Huq
openalex   +3 more sources

Adjoint functors in graph theory [PDF]

open access: yesarXiv, 2013
We survey some uses of adjoint functors in graph theory pertaining to colourings, complexity reductions, multiplicativity, circular colourings and tree duality. The exposition of these applications through adjoint functors unifies the presentation to some extent, and also raises interesting questions.
Foniok, Jan, Tardif, Claude
arxiv   +3 more sources

Adjoint and Frobenius Pairs of Functors, Equivalences, and the Picard Group for Corings [PDF]

open access: greenarXiv, 2007
We study adjoint and Frobenius pairs of functors, equivalences, and the Picard group for corings.
Mohssin Zarouali-Darkaoui
arxiv   +3 more sources

Adjointness of Suspension and Shape Path Functors

open access: greenMathematics Interdisciplinary Research, 2017
11 pages.
Tayyebe Nasri   +2 more
openalex   +6 more sources

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