Results 41 to 50 of about 354,525 (216)

Closed subsets of compact-like topological spaces

Applied General Topology, 2020
We investigate closed subsets (subsemigroups, resp.) of compact-like topological spaces (semigroups, resp.). We show that each Hausdorff topological space is a closed subspace of some Hausdorff ω-bounded pracompact topological space and describe open ...
Serhii Bardyla, Alex Ravsky
doaj   +1 more source

Mapping spaces from projective spaces [PDF]

, 2015
We denote the $n$-th projective space of a topological monoid $G$ by $B_nG$ and the classifying space by $BG$. Let $G$ be a well-pointed topological monoid of the homotopy type of a CW complex and $G'$ a well-pointed grouplike topological monoid.
Tsutaya, Mitsunobu
core   +1 more source

On cofree S-spaces and cofree S-flows

Applied General Topology, 2012
Let S-Tych be the category of Tychonoff S-spaces for a topological monoid S. We study the cofree S-spaces and cofree S-flows over topological spaces and we prove that for any topological space X and a topological monoid S, the function space C(S,X) with ...
Behnam Khosravi
doaj   +1 more source

Tied links in various topological settings [PDF]

Journal of knot theory and its ramifications, 2020
Tied links in [Formula: see text] were introduced by Aicardi and Juyumaya as standard links in [Formula: see text] equipped with some non-embedded arcs, called ties, joining some components of the link.
I. Diamantis
semanticscholar   +1 more source

Positive answers to Koch’s problem in special cases

Topological Algebra and its Applications, 2020
A topological semigroup is monothetic provided it contains a dense cyclic subsemigroup. The Koch problem asks whether every locally compact monothetic monoid is compact.
Banakh Taras, Bardyla Serhii, Guran Igor, Gutik Oleg, Ravsky Alex   +4 more
doaj   +1 more source

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

, 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, Haesemeyer, Christian, Walker, Mark E., Weibel, Charles A.   +3 more
core   +4 more sources

Topological spaces versus frames in the topos of $M$-sets [PDF]

Categories and General Algebraic Structures with Applications
In this paper we study topological spaces, frames, and their confrontation in the presheaf topos of $M$-sets for a monoid $M$. We introduce the internalization, of the frame of open subsets for topologies, and of topologies of points for frames, in our ...
Mojgan Mahmoudi, Amir H. Nejah
doaj   +1 more source

Separation Property for wB- and wS-regular Languages [PDF]

Logical Methods in Computer Science, 2014
In this paper we show that {\omega}B- and {\omega}S-regular languages satisfy the following separation-type theorem If L1,L2 are disjoint languages of {\omega}-words both recognised by {\omega}B- (resp.
Michał Skrzypczak
doaj   +1 more source

On topologization of the bicyclic monoid

Visnyk Lvivskogo Universytetu Seriya Mekhaniko-Matematychna, 2023
8 ...
Chornenka, Adriana, Gutik, Oleg
openaire   +2 more sources

A bridge theorem for the entropy of semigroup actions

Topological Algebra and its Applications, 2020
The topological entropy of a semigroup action on a totally disconnected locally compact abelian group coincides with the algebraic entropy of the dual action.
Bruno Anna Giordano
doaj   +1 more source