Results 31 to 40 of about 993,184 (218)
Maximal subgroups of free idempotent-generated semigroups over the full transformation monoid [PDF]
, 2011 Let Tn be the full transformation semigroup of all mappings from the set {1, . . . , n} to itself under composition. Let E = E(Tn) denote the set of idempotents of Tn and let e ∈ E be an arbitrary idempotent satisfying |im (e)| = r ≤ n − 2. We prove that
Ruskuc, N. +3 more
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Preservation of Mean-Square Lyapunov Exponents for Nonautonomous Stochastic Evolution Equations
AxiomsWe study the long-time behavior of nonlinear stochastic evolution equations in a separable Hilbert space driven by a Q-Wiener process. The linear part of the equation is generated by a strongly continuous semigroup with an exponential dichotomy, which ...
Dmytro Shtefan +2 more
doaj +1 more source
Condensed Matter Physics, 2006 We study the regularity problems for unbounded spin systems of anharmonic oscillators, that approximate multi-dimensional Euclidean field theories. The main attention is paid to the effect of anharmonism on the C∞-regularity properties of evolutional ...
Alexander Val. Antoniouk +1 more
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Boundary controllability of impulsive nonlinear fractional delay integro-differential system
Cogent Engineering, 2016 By using the strongly continuous semigroup theory and the Banach contraction principle, we study the boundary controllability of time varying delay impulsive nonlinear fractional integrodifferential system in Banach spaces.
Hamdy M. Ahmed
doaj +1 more source
Nonlinear submeans on semigroups
Topological Methods in Nonlinear Analysis, 2003 Let \(S\) be a semigroup and \(X\) be a subspace of \(l^\infty(S)\) containing constants, where \(l^\infty(S)\) denotes the Banach space of bounded real-valued functions on \(S\) with supremum norm. A continuous linear functional \(\mu\) on \(X\) is called a {mean} if \(\| \mu\| =\mu(1)=1\).
W.Takahashi, A.T.Lau
openaire +4 more sources
Mathematical Methods in the Applied Sciences, Volume 48, Issue 6, Page 6425-6446, April 2025.ABSTRACT The well‐posedness results for mild solutions to the fractional neutral stochastic differential system with Rosenblatt process with Hurst index Ĥ∈12,1$$ \hat{H}\in \left(\frac{1}{2},1\right) $$ is discussed in this article. To demonstrate the results, the concept of bounded integral contractors is combined with the stochastic result and ...
Dimplekumar N. Chalishajar +3 more
wiley +1 more source
A new semigroup technique in poisson approximation [PDF]
, 1989 Publisher's, offprint versionWe present a unified and self-contained approach to Poisson approximation problems for independent Bernoulli summands with respect to several metrics by a general semigroup technique, expanding and completing earlier work on ...
Pfeifer, Dietmar +2 more
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Fragmentation–Coagulation Processes With Advection or Diffusion in Space
Mathematical Methods in the Applied Sciences, EarlyView.ABSTRACT In this paper, we consider a continuous fragmentation–coagulation model in which the reacting particles can be transported in physical space through either advection or diffusion. We prove new results on the generation of C0$$ {C}_0 $$‐semigroups with parameter and use them to show that the abstract Cauchy problem associated with a more ...
Jacek Banasiak, Nduduzo Majozi
wiley +1 more source
On the algebraic invariants of certain affine semigroup rings
, 2023 Let a and d be two linearly independent vectors in N2, over the field of rational numbers. For a positive integer k≥ 2 , consider the sequence a, a+ d, … , a+ kd such that the affine semigroup Sa,d,k= ⟨ a, a+ d, … , a+ kd⟩ is minimally generated.
Sengupta, Indranath +1 more
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Euler semigroup, Hardy-Sobolev and Gagliardo-Nirenberg type inequalities on homogeneous groups [PDF]
, 2020 In this paper we describe the Euler semigroup {e−tE∗E}t>0 on homogeneous Lie groups, which allows us to obtain various types of the Hardy-Sobolev and Gagliardo-Nirenberg type inequalities for the Euler operator E.
Yessirkegenov, N +5 more
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