Results 41 to 50 of about 10,485 (179)

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

Toposes of Topological Monoid Actions

open access: yesCompositionality, 2023
We demonstrate that categories of continuous actions of topological monoids on discrete spaces are Grothendieck toposes. We exhibit properties of these toposes, giving a solution to the corresponding Morita-equivalence problem. We characterize these toposes in terms of their canonical points.
openaire   +2 more sources

Topological Structures Induced by General Fuzzy Automata Based on Lattice-ordered Monoid

open access: yesپژوهش‌های ریاضی, 2021
The fundamental role of algebraic properties in the development of the basics of computer science has led researchers to study the concepts of fuzzy automaton separatedness, connectedness, and reversibility on a large scale.In this paper, the general ...
khadijeh abolpour
doaj  

Toric varieties, monoid schemes and $cdh$ descent [PDF]

open access: yes, 2012
We give conditions for the Mayer-Vietoris property to hold for the algebraic K-theory of blow-up squares of toric varieties in any characteristic, using the theory of monoid schemes.
Cortiñas, Guillermo   +3 more
core   +4 more sources

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

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

Topological Transformation Monoids

open access: yes, 2018
21 pages. The second version has a new result, showing that there is only one Polish semigroup topology on T(X) when X is ...
Mesyan, Z.   +2 more
openaire   +2 more sources

Continuous Homomorphisms Defined on (Dense) Submonoids of Products of Topological Monoids

open access: yesAxioms, 2020
We study the factorization properties of continuous homomorphisms defined on a (dense) submonoid S of a Tychonoff product D = ∏ i ∈ I D i of topological or even topologized monoids.
Mikhail Tkachenko
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

Non-archimedean topological monoids

open access: yesSemigroup Forum
AbstractWe say that a topological monoid S is left non-archimedean (in short: l-NA) if the left action of S on itself admits a proper S-compactification $$\nu :S \hookrightarrow Y$$ ν : S ↪ Y such ...
Megrelishvili, M., Shlossberg, M.
openaire   +3 more sources

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