Results 81 to 90 of about 143,321 (277)
The subpower membership problem for semigroups
, 2016 Fix a finite semigroup $S$ and let $a_1,\ldots,a_k, b$ be tuples in a direct power $S^n$. The subpower membership problem (SMP) asks whether $b$ can be generated by $a_1,\ldots,a_k$.
Bulatov, Andrei +3 more
core +1 more source
On the Multiplier Semigroup of a Weighted Abelian Semigroup
Indian Journal of Pure and Applied Mathematics, 2019 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Dabhi, Prakash A., Pandey, Manish Kumar
openaire +1 more source
Abstract Boundary Delay Systems and Application to Network Flow
Mathematical Methods in the Applied Sciences, Volume 49, Issue 1, Page 119-129, 15 January 2026.ABSTRACT This paper investigates the well‐posedness and positivity of solutions to a class of delayed transport equations on a network. The material flow is delayed at the vertices and along the edges. The problem is reformulated as an abstract boundary delay equation, and well‐posedness is proved by using the Staffans–Weiss theory.
András Bátkai +2 more
wiley +1 more source
On representation type of the semigroup $S^0_{32}$ over an arbitrary field
Науковий вісник Ужгородського університету. Серія: Математика і інформатика, 2018 In this paper we study matrix representations of a semigroup that is the simplest amplification of the wild semigroup S_{32}=, namely the semigroup S^0_{32}=. We prove that the semigroup S^0_{32} has finite representation type over an arbitrary field.
О. В. Зубарук
doaj +1 more source
Cuntz semigroups of compact-type Hopf C*-algebras
, 2017 The classical Cuntz semigroup has an important role in the study of C*-algebras, being one of the main invariants used to classify recalcitrant C*-algebras up to isomorphism.
Kucerovsky, Dan
core +2 more sources
The set-theoretic Yang-Baxter equation, Kimura semigroups and functional graphs [PDF]
, 2023 A. L. Agore +2 more
openalex +1 more source
TURKISH JOURNAL OF MATHEMATICS, 2016 Summary: We characterize the idempotent ideal elements of the \(le\)-semigroups in terms of semisimple elements and we prove, among others, that the ideal elements of an \(le\)-semigroup \(S\) are prime (resp. weakly prime) if and only if they form a chain and \(S\) is intraregular (resp. semisimple).
openaire +3 more sources
Israel Journal of Mathematics, 2022 47 pages.
Hazrat, Roozbeh (R16959) +1 more
openaire +4 more sources
Revisiting Hazard Ratios: Can We Define Causal Estimands for Time‐Dependent Treatment Effects?
Biometrical Journal, Volume 67, Issue 6, December 2025.ABSTRACT In this paper, some aspects concerning the causal interpretation of hazard contrasts are revisited. It is first investigated, in which sense the hazard ratio constitutes a causal effect. It is demonstrated that the hazard ratio at a timepoint t$t$ represents a causal effect for the population at baseline, but in general not for any population ...
Dominic Edelmann
wiley +1 more source
A semigroup-like Property for Discrete Mittag-Leffler Functions
, 2012 Discrete Mittag-Leffler function Eᾱ(λ,z) of order 0 < α ≤ 1, E1̄(λ,z)=(1-λ)-z, λ ≠ 1, satisfies the nabla Caputo fractional linear difference equation C∇0αx(t)=λx(t),x(0)=1,t∈ℕ1={1,2,3,…}. Computations can show that the semigroup identity Eᾱ(λ,z1)Eᾱ
T. Abdeljawad, F. Jarad, D. Baleanu
semanticscholar +1 more source