Results 91 to 100 of about 143,321 (277)
Vladimirov–Pearson operators on ζ$\zeta$‐regular ultrametric Cantor sets
Mathematische Nachrichten, Volume 298, Issue 12, Page 3779-3790, December 2025.Abstract A new operator for certain types of ultrametric Cantor sets is constructed using the measure coming from the spectral triple associated with the Cantor set, as well as its zeta function. Under certain mild conditions on that measure, it is shown that it is an integral operator similar to the Vladimirov–Taibleson operator on the p$p$‐adic ...
Patrick Erik Bradley
wiley +1 more source
Representation functions of additive bases for abelian semigroups
International Journal of Mathematics and Mathematical Sciences, 2004 A subset of an abelian semigroup is called an asymptotic basis for the semigroup if every element of the semigroup with at most finitely many exceptions can be represented as the sum of two distinct elements of the basis.
Melvyn B. Nathanson
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A Semigroup Is Finite Iff It Is Chain-Finite and Antichain-Finite [PDF]
, 2021 Iryna Banakh +2 more
openalex +1 more source
Acoustic waves interacting with non–locally reacting surfaces in a Lagrangian framework
Mathematische Nachrichten, Volume 298, Issue 12, Page 3855-3892, December 2025.Abstract The paper deals with a family of evolution problems arising in the physical modeling of small amplitude acoustic phenomena occurring in a fluid, bounded by a surface of extended reaction. They are all derived in a Lagrangian framework. We study well‐posedness of these problems, their mutual relations, and their relations with other evolution ...
Enzo Vitillaro
wiley +1 more source
On endomorphisms of groups of order 32 with maximal subgroups C24 or C42 ; pp. 1–14 [PDF]
Proceedings of the Estonian Academy of Sciences, 2016 It is proved that each group of order 32 that has a maximal subgroup isomorphic to C2 x C2 x C2 x C2 or C4 x C4 is determined by its endomorphism semigroup in the class of all groups.
Piret Puusemp, Peeter Puusemp
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Valuation Semigroups of Two Dimensional Local Rings
, 2014 We consider the question of when a semigroup is the semigroup of a valuation dominating a two dimensional noetherian local domain, giving some surprising examples.
Cutkosky, Steven Dale, Vinh, Pham An
core +1 more source
Inverse semigroup actions as groupoid actions [PDF]
, 2011 To an inverse semigroup, we associate an étale groupoid such that its actions on topological spaces are equivalent to actions of the inverse semigroup. Both the object and the arrow space of this groupoid are non-Hausdorff. We show that this construction
Alcides Buss, R. Exel, R. Meyer
semanticscholar +1 more source
On the principle of linearized stability for quasilinear evolution equations in time‐weighted spaces
Mathematische Nachrichten, Volume 298, Issue 12, Page 3939-3959, December 2025.Abstract Quasilinear (and semilinear) parabolic problems of the form v′=A(v)v+f(v)$v^{\prime }=A(v)v+f(v)$ with strict inclusion dom(f)⊊dom(A)$\mathrm{dom}(f)\subsetneq \mathrm{dom}(A)$ of the domains of the function v↦f(v)$v\mapsto f(v)$ and the quasilinear part v↦A(v)$v\mapsto A(v)$ are considered in the framework of time‐weighted function spaces ...
Bogdan‐Vasile Matioc +2 more
wiley +1 more source
On the closure of the extended bicyclic semigroup
Karpatsʹkì Matematičnì Publìkacìï, 2011 In the paper we study the semigroup $mathscr{C}_{mathbb{Z}}$which is a generalization of the bicyclic semigroup. We describemain algebraic properties of the semigroup$mathscr{C}_{mathbb{Z}}$ and prove that every non-trivialcongruence $mathfrak{C}$ on the
I. R. Fihel, O. V. Gutik
doaj
On endomorphisms of groups of order 36; pp. 237–254 [PDF]
Proceedings of the Estonian Academy of Sciences, 2016 There exist exactly 14 non-isomorphic groups of order 36. In this paper we will prove that three of them are not determined by their endomorphism semigroups in the class of all groups.
Alar Leibak, Peeter Puusemp
doaj +1 more source