Results 91 to 100 of about 31,145 (240)

Graded near-rings

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2016
In this paper, we consider graded near-rings over a monoid G as generalizations of graded rings over groups, and study some of their basic properties.
Dumitru Mariana   +2 more
doaj   +1 more source

Cayley graphs of basic algebraic structures [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2020
We present simple graph-theoretic characterizations for the Cayley graphs of monoids, right-cancellative monoids, left-cancellative monoids, and groups.
Didier Caucal
doaj   +1 more source

The log Grothendieck ring of varieties

open access: yesBulletin of the London Mathematical Society, Volume 58, Issue 1, January 2026.
Abstract We define a Grothendieck ring of varieties for log schemes. It is generated by one additional class “P$P$” over the usual Grothendieck ring. We show the naïve definition of log Hodge numbers does not make sense for all log schemes. We offer an alternative that does.
Andreas Gross   +4 more
wiley   +1 more source

Partial monoid actions and a class of restriction semigroups [PDF]

open access: yes, 2014
We study classes of proper restriction semigroups determined by properties of partial actions underlying them. These properties include strongness, antistrongness, being defined by a homomorphism, being an action etc.
G. Kudryavtseva
semanticscholar   +1 more source

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

On surjunctive monoids

open access: yes, 2014
A monoid $M$ is called surjunctive if every injective cellular automata with finite alphabet over $M$ is surjective. We show that all finite monoids, all finitely generated commutative monoids, all cancellative commutative monoids, all residually finite ...
Ceccherini-Silberstein, Tullio   +1 more
core   +3 more sources

Modeling (∞,1)$(\infty,1)$‐categories with Segal spaces

open access: yesBulletin of the London Mathematical Society, Volume 58, Issue 1, January 2026.
Abstract In this paper, we construct a model structure for (∞,1)$(\infty,1)$‐categories on the category of simplicial spaces, whose fibrant objects are the Segal spaces. In particular, we show that it is Quillen equivalent to the models of (∞,1)$(\infty,1)$‐categories given by complete Segal spaces and Segal categories.
Lyne Moser, Joost Nuiten
wiley   +1 more source

Hinich's model for Day convolution revisited

open access: yesBulletin of the London Mathematical Society, Volume 58, Issue 1, January 2026.
Abstract We prove that Hinich's construction of the Day convolution operad of two O$\mathcal {O}$‐monoidal ∞$\infty$‐categories is an exponential in the ∞$\infty$‐category of ∞$\infty$‐operads over O$\mathcal {O}$, and use this to give an explicit description of the formation of algebras in the Day convolution operad as a bivariant functor.
Christoph Winges
wiley   +1 more source

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  

Discriminants and the monoid of quadratic rings

open access: yes, 2016
We consider the natural monoid structure on the set of quadratic rings over an arbitrary base scheme and characterize this monoid in terms of discriminants.Comment: 23 pages; many changes made according to ...
Voight, John
core   +1 more source

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