Results 41 to 50 of about 4,881 (233)

Factoring Continuous Characters Defined on Subgroups of Products of Topological Groups

open access: yesAxioms, 2021
This study is on the factorization properties of continuous homomorphisms defined on subgroups (or submonoids) of products of (para)topological groups (or monoids).
Mikhail G. Tkachenko
doaj   +1 more source

A Categorical Approach to Syntactic Monoids [PDF]

open access: yesLogical Methods in Computer Science, 2018
The syntactic monoid of a language is generalized to the level of a symmetric monoidal closed category $\mathcal D$. This allows for a uniform treatment of several notions of syntactic algebras known in the literature, including the syntactic monoids of ...
Jiří Adamek   +2 more
doaj   +1 more source

Garside monoids vs divisibility monoids [PDF]

open access: yesMathematical Structures in Computer Science, 2005
Divisibility monoids (resp. Garside monoids) are a natural algebraic generalization of Mazurkiewicz trace monoids (resp. spherical Artin monoids), namely monoids in which the distributivity of the underlying lattices (resp. the existence of common multiples) is kept as an hypothesis, but the relations between the generators are not supposed to ...
openaire   +2 more sources

SOLVING DIFFERENCE EQUATIONS IN SEQUENCES: UNIVERSALITY AND UNDECIDABILITY

open access: yesForum of Mathematics, Sigma, 2020
We study solutions of difference equations in the rings of sequences and, more generally, solutions of equations with a monoid action in the ring of sequences indexed by the monoid. This framework includes, for example, difference equations on grids (for
GLEB POGUDIN   +2 more
doaj   +1 more source

Cohomology monoids of monoids with coefficients in semimodules II [PDF]

open access: yesSemigroup Forum, 2014
We relate the old and new cohomology monoids of an arbitrary monoid $M$ with coefficients in semimodules over $M$, introduced in the author's previous papers, to monoid and group extensions. More precisely, the old and new second cohomology monoids describe Schreier extensions of semimodules by monoids, and the new third cohomology monoid is related to
openaire   +3 more sources

Division in the Plactic Monoid [PDF]

open access: yes, 2022
In [1], a novel cryptographic key exchange technique was proposed using the plactic monoid, based on the apparent difficulty of solving division problems in that monoid.
Chris Monico
core  

On topologies on the underlying set of a topological monoid induced by its unitary extensions

open access: yesTopological Algebra and its Applications, 2022
Extensions of a given topological monoid where all its unitary Cauchy filters converge, can induce di˙erent topologies on its underlying set. We study properties of these topologies and prove a condition under which the initial topology of this monoid is
Averbukh Boris G.
doaj   +1 more source

On unitary extensions and unitary completions of topological monoids

open access: yesTopological Algebra and its Applications, 2016
The concept of a unitary Cauchy net in an arbitrary Hausdorff topological monoid generalizes the concept of a fundamental sequence of reals. We construct extensions of this monoid where all its unitary Cauchy nets converge.
Averbukh Boris G.
doaj   +1 more source

Aggregation and the Structure of Value

open access: yesNoûs, EarlyView.
ABSTRACT Roughly, the view I call “Additivism” sums up value across time and people. Given some standard assumptions, I show that Additivism follows from two principles. The first says that how lives align in time cannot, in itself, matter. The second says, roughly, that a world cannot be better unless it is better within some period or another.
Weng Kin San
wiley   +1 more source

Pretzel Monoids

open access: yesInternational Journal of Algebra and Computation
We introduce an interesting class of left adequate monoids which we call pretzel monoids. These, on the one hand, are monoids of birooted graphs with respect to a natural ‘glue-and-fold’ operation, and on the other hand, are shown to be defined in the category of left adequate monoids by a natural class of presentations.
Daniel Heath   +2 more
openaire   +4 more sources

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