Results 1 to 10 of about 1,625,403 (282)
What is category theory to cognitive science? Compositional representation and comparison [PDF]
Category theorists and cognitive scientists study the structural (analogical) relations between domains of interest albeit in different contexts, that is, formal and psychological systems, respectively.
Steven Phillips
doaj +2 more sources
Morita theorems for functor categories [PDF]
We generalize the Morita theorems to certain functor categories using properties of adjoint functors.
David C. Newell
openalex +3 more sources
Quadratic functors on pointed categories [PDF]
64 ...
Manfred Hartl, Christine Vespa
+6 more sources
Derived equivalences of functor categories [PDF]
Let $\Mod \CS$ denote the category of $\CS$-modules, where $\CS$ is a small category. In the first part of this paper, we provide a version of Rickard's theorem on derived equivalence of rings for $\Mod \CS$. This will have several interesting applications.
Javad Asadollahi+2 more
openalex +6 more sources
Categories with projective functors
We introduce a notion of a category with full projective functors. It encodes certain common properties of categories appearing in representation theory of Lie groups, Lie algebras and quantum groups. We describe the left or right exact functors which naturally commute with projective functors and provide a unified approach to the verification of ...
Oleksandr Khomenko
openalex +6 more sources
Derived category of weak chain U-complexes [PDF]
In this paper, we define the derived category of weak chain U-complexes, and we give a characterization of any weak chain U-complex as an object in the right bounded homotopy category of weak chain U-complexes of projective modules.
Fajar Yuliawan+3 more
doaj +2 more sources
Calculus of functors and model categories
22 pages. Exposition is substantially improved.
Georg Biedermann+2 more
openalex +3 more sources
In this paper, we define the functor category Fquad associated to vector spaces over the field with two elements, F\_2, equipped with a quadratic form. We show the existence of a fully-faithful, exact functor : \F \to Fquad, which preserves simple objects, where \F is the category of functors from the category of finite dimensional F\_2-vector spaces
Christine Vespa
openalex +4 more sources
Direct Limit of Krasner (m, n)-Hyperrings [PDF]
The purpose of this paper is the study of direct limits in category of Krasner (m, n)-hyperrings. In this regards we introduce and study direct limit of a direct system in category (m, n)-hyperrings.
Reza Ameri, Ameneh Asadi
doaj +1 more source
In Chapter I we discussed various algebraic structures (rings, abelian groups, modules) and their appropriate transformations (homomorphisms). We also saw how certain constructions (for example, the formation of HomΛ(A, B) for given Λ-modules A, B) produced new structures out of given structures.
Peter Hilton+2 more
openaire +4 more sources