Results 71 to 80 of about 430 (166)

On topologization of subsemigroups of the bicyclic monoid

open access: yes
We show that if a subsemigroup \(S\) of the bicyclic monoid \({\mathcal{C}}(p,q)\) contains infinitely many idempotents, then \(S\) admits only the discrete Hausdorff shift-continuous topology. Also we proof that every right-continuous (left-continuous) Hausdorff Baire topology on the upper subsemigroup \(\mathcal{C}_+(a,b)\) (down subsemigroup ...
Chornenka, Adriana, Gutik, Oleg
openaire   +4 more sources

Topological Degree of Shift Spaces on Monoids

open access: yes, 2018
This paper considers the topological degree of $G$-shifts of finite type for the case where $G$ is a nonabelian monoid. Whenever the Cayley graph of $G$ has a finite representation and the relationships among the generators of $G$ are determined by a matrix $A$, the coefficients of the characteristic polynomial of $A$ are revealed as the number of ...
Ban, Jung-Chao   +2 more
openaire   +2 more sources

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

open access: yes
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
core   +1 more source

Toric varieties, monoid schemes and cdh descent

open access: yes, 2015
We give conditions for the Mayer–Vietoris property to hold for the algebraic K-theory of blow-up squares of toric varieties and schemes, using the theory of monoid schemes.
Cortiñas, Guillermo   +3 more
core  

A Lévy–Itô decomposition on a class of topological monoids

open access: yesESAIM: Probability and Statistics
We investigate a Lévy–Itô formula on a class of topological monoids with a suitable family of characters. This formula generalizes the classical ones for subordinators. Stochastic processes such as classical subordinators, extremal processes, measured-valued processes and the random interlacements model fall into this category.
Ulises Pérez-Cendejas   +1 more
openaire   +2 more sources

ALGEBRAIC, COMBINATORIAL AND TOPOLOGICAL PROPERTIES OF SINGULAR VIRTUAL BRAID MONOIDS

open access: yes, 2019
International audienceIn this paper we discuss algebraic, combinatorial and topological properties of singular virtual braids. On the algebraic side we state the relations between classical and virtual singular objects, in addition we discuss a Birman ...
Gandolfi, Guillaume   +5 more
core   +1 more source

A topological approach to transductions

open access: yes, 2005
This paper is a contribution to the mathematical foundations of the theory of automata. We give a topological characterization of the transductions ?
Silva, Pedro   +2 more
core   +1 more source

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