Results 51 to 60 of about 354,525 (216)

Cohomology of Presheaves of Monoids

open access: yesMathematics, 2020
The purpose of this work is to extend Leech cohomology for monoids (and so Eilenberg-Mac Lane cohomology of groups) to presheaves of monoids on an arbitrary small category.
Pilar Carrasco, Antonio M. Cegarra
doaj   +1 more source

On a semitopological semigroup $\boldsymbol{B}_{\omega}^{\mathscr{F}}$ when a family $\mathscr{F}$ consists of inductive non-empty subsets of $\omega$

open access: yesМатематичні Студії, 2023
Let $\boldsymbol{B}_{\omega}^{\mathscr{F}}$ be the bicyclic semigroup extension for the family $\mathscr{F}$ of ${\omega}$-closed subsets of $\omega$ which is introduced in \cite{Gutik-Mykhalenych=2020}.
O. V. Gutik, M. S. Mykhalenych
doaj   +1 more source

On the Analysis and Computation of Topological Fuzzy Measure in Distributed Monoid Spaces

open access: yesSymmetry, 2018
The computational applications of fuzzy sets are pervasive in systems with inherent uncertainties and multivalued logic-based approximations. The existing fuzzy analytic measures are based on regularity variations and the construction of fuzzy ...
S. Bagchi
semanticscholar   +1 more source

On the S-Invariance Property for S-Flows

open access: yesAbstract and Applied Analysis, 2010
We define an equivalence relation on a topological space which is acted by topological monoid S as a transformation semigroup. Then, we give some results about the S-invariant classes for this relation.
Amin Saif, Adem Kılıçman
doaj   +1 more source

On subtrees of the representation tree in rational base numeration systems [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2018
Every rational number p/q defines a rational base numeration system in which every integer has a unique finite representation, up to leading zeroes. This work is a contribution to the study of the set of the representations of integers.
Shigeki Akiyama   +2 more
doaj   +1 more source

The K-theory of toric varieties in positive characteristic [PDF]

open access: yes, 2012
We show that if X is a toric scheme over a regular ring containing a field then the direct limit of the K-groups of X taken over any infinite sequence of nontrivial dilations is homotopy invariant. This theorem was known in characteristic 0.
Cortiñas, Guillermo   +3 more
core   +3 more sources

Spectra of units for periodic ring spectra and group completion of graded E-infinity spaces [PDF]

open access: yes, 2015
We construct a new spectrum of units for a commutative symmetric ring spectrum that detects the difference between a periodic ring spectrum and its connective cover. It is augmented over the sphere spectrum.
Boardman   +11 more
core   +2 more sources

Profinite direct sums with applications to profinite groups of type ΦR$\Phi _R$

open access: yesBulletin of the London Mathematical Society, Volume 58, Issue 1, January 2026.
Abstract We show that the ‘profinite direct sum’ is a good notion of infinite direct sums for profinite modules, having properties similar to those of direct sums of abstract modules. For example, the profinite direct sum of projective modules is projective, and there is a Mackey's formula for profinite modules described using these sums.
Jiacheng Tang
wiley   +1 more source

Units of ring spectra and their traces in algebraic K-theory

open access: yes, 2004
Let GL_1(R) be the units of a commutative ring spectrum R. In this paper we identify the composition BGL_1(R)->K(R)->THH(R)->\Omega^{\infty}(R), where K(R) is the algebraic K-theory and THH(R) the topological Hochschild homology of R.
Schlichtkrull, Christian
core   +2 more sources

Quantifiers on languages and codensity monads [PDF]

open access: yes, 2017
This paper contributes to the techniques of topo-algebraic recognition for languages beyond the regular setting as they relate to logic on words. In particular, we provide a general construction on recognisers corresponding to adding one layer of various
Gehrke, Mai   +2 more
core   +2 more sources

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