Results 51 to 60 of about 298 (187)
Cayley color graphs of inverse semigroups and groupoids [PDF]
, 2008 summary:The notion of Cayley color graphs of groups is generalized to inverse semigroups and groupoids. The set of partial automorphisms of the Cayley color graph of an inverse semigroup or a groupoid is isomorphic to the original inverse semigroup or ...
Sieben, Nándor
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In‐and‐Out: Algorithmic Diffusion for Sampling Convex Bodies
Random Structures &Algorithms, Volume 68, Issue 3, May 2026.ABSTRACT We present a new random walk for uniformly sampling high‐dimensional convex bodies. It achieves state‐of‐the‐art runtime complexity with stronger guarantees on the output than previously known, namely in Rényi divergence (which implies TV, 𝒲2, KL, χ2$$ {\chi}^2 $$).
Yunbum Kook +2 more
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Molaie’s generalized groups are completely simple semigroups [PDF]
, 2002 In [2] Molaei introduces generalized groups, a class of algebras of interest to physics, and proves some results about them. The aim of this note is to prove that Generalized Groups are the Completely Simple Semigroups.
Araújo, João, Konieczny, Janusz
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On semigroups generated by differential operators on Lie groups
Journal of Functional Analysis, 1979 AbstractLet dR be the differential of a strongly continuous representation of a Lie group G on a Hilbert space H. Let P be the left-invariant second-order differential operator on G with positive semidefinite main part P2 and with first-order part P1.
openaire +1 more source
Stability of Blaschke products under forward iteration
Bulletin of the London Mathematical Society, Volume 58, Issue 5, May 2026.Abstract Forward iteration of holomorphic self‐maps generalizes the iteration of a single function in a natural way. This framework arises in complex dynamics, for instance, in the study of wandering domains and in seeking suitable extensions of the Denjoy–Wolff theorem. Here, we consider forward iteration of Blaschke products.
Daniela Kraus +2 more
wiley +1 more source
Finiteness conditions for matrix semigroups
, 1973 Classical theorems of Schur and Burnside on finiteness of matrix groups are generalized to regular and inverse matrix semigroups.
Yechezkel Zalcstein
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Pseudometrics on Ext-semigroups [PDF]
, 2020 summary:This paper considers certain pseudometric structures on Ext-semigroups and gives a unified characterization of several topologies on Ext-semigroups. It is demonstrated that these Ext-semigroups are complete topological semigroups. To this end, it
Wei, Changguo +2 more
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Littlewood, Paley and almost‐orthogonality: a theory well ahead of its time
Journal of the London Mathematical Society, Volume 113, Issue 5, May 2026.Abstract The classic paper by Littlewood and Paley [J. Lond. Math. Soc. (1), 6 (1931), 230–233] marked the birth of Littlewood–Paley theory. We discuss this paper and its impact from a historical perspective, include an outline of the results in the paper and their subsequent significance in relation to developments over the last century, and set them ...
Anthony Carbery
wiley +1 more source
, 1988 We extend the well-known relation between Markov semigroups and processes with independent increments to the case of generalized group-valued semigroups indexed by some measurable space and stochastic multiplicative measures.
Høegh-Krohn, Raphael +2 more
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Excursion theory for Markov processes indexed by Lévy trees
Proceedings of the London Mathematical Society, Volume 132, Issue 5, May 2026.Abstract We develop an excursion theory that describes the evolution of a Markov process indexed by a Lévy tree away from a regular and instantaneous point x$x$ of the state space. The theory builds upon a notion of local time at x$x$ that was recently introduced in the companion paper [Probab. Theory Related Fields. 189 (2024), 1–99].
Armand Riera, Alejandro Rosales‐Ortiz
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