Results 161 to 170 of about 86,229 (173)
Some of the next articles are maybe not open access.

Cup-products for the polyhedral product functor

Mathematical Proceedings of the Cambridge Philosophical Society, 2012
Davis–Januszkiewicz introduced manifolds which are now known as moment-angle manifolds over a polytope [6]. Buchstaber–Panov introduced and extensively studied moment-angle complexes defined for any abstract simplicial complex K [4].
A. Bahri   +3 more
semanticscholar   +1 more source

On Covers and Envelopes in Some Functor Categories

, 2013
We study the existence of covers and envelopes by some special functors on the category of finitely presented modules. As an application, we characterize some important rings using these functors.
L. Mao
semanticscholar   +1 more source

THE OPERATOR K-FUNCTOR AND EXTENSIONS OF C*-ALGEBRAS

, 1981
In this paper a general operator K-functor is constructed, depending on a pair A, B of C*-algebras. Special cases of this functor are the ordinary cohomological K-functor K*(B) and the homological K-functor K*(A).
G. Kasparov
semanticscholar   +1 more source

Characterizing Serre Quotients with no Section Functor and Applications to Coherent Sheaves

Applied Categorical Structures, 2012
We prove an analogon of the the fundamental homomorphism theorem for certain classes of exact and essentially surjective functors of Abelian categories $\mathcal{Q}:\mathcal{A} \to \mathcal{B}$. It states that $\mathcal{Q}$ is up to equivalence the Serre
Mohamed Barakat, Markus Lange-Hegermann
semanticscholar   +1 more source

A Modular Functor Which is Universal¶for Quantum Computation

, 2000
:We show that the topological modular functor from Witten–Chern–Simons theory is universal for quantum computation in the sense that a quantum circuit computation can be efficiently approximated by an intertwining action of a braid on the functor's state
M. Freedman, M. Larsen, Zhenghan Wang
semanticscholar   +1 more source

A geometric Schur functor

, 2012
We give geometric descriptions of the category $$C_k(n,d)$$Ck(n,d) of rational polynomial representations of $$GL_n$$GLn over a field $$k$$k of degree $$d$$d for $$d\le n$$d≤n, the Schur functor and Schur–Weyl duality.
C. Mautner
semanticscholar   +1 more source

Functors of Complexes

1972
If T: ∂AG→∂AG is a functor from complexes to complexes then X↦TSX provides a generalization of the singular complex SX which may yield new useful topological invariants. We study this question (§§ 2–7), at least if T is the (dimension-wise) prolongation of an additive functor t: AG→AG.
openaire   +2 more sources

A Binary Decision Tree Abstract Domain Functor

Sensors Applications Symposium, 2015
Junjie Chen, P. Cousot
semanticscholar   +1 more source

A multiplicative normal functor is a power functor

Mathematical Notes of the Academy of Sciences of the USSR, 1987
openaire   +2 more sources

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