Showing 161 - 180 results of 229 for search '"Semigroup"', query time: 0.04s Refine Results
  1. 161

    Large Time Behavior for Weak Solutions of the 3D Globally Modified Navier-Stokes Equations by Junbai Ren

    Published 2014-01-01
    “…With the aid of energy methods and auxiliary decay estimates together with Lp-Lq estimates of heat semigroup, we derive the optimal upper and lower decay estimates of the weak solutions for the globally modified Navier-Stokes equations as C1(1+t)-3/4≤uL2≤C2(1+t)-3/4,  t>1. …”
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  2. 162

    On representation of solutions to the heat equation by Auscher, Pascal, Hou, Hedong

    Published 2024-09-01
    “…We propose a simple method to obtain semigroup representation of solutions to the heat equation using a local $L^2$ condition with prescribed growth and a boundedness condition within tempered distributions. …”
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  3. 163

    A Note on Impulsive Fractional Evolution Equations with Nondense Domain by Zufeng Zhang, Bin Liu

    Published 2012-01-01
    “…Some errors in the existing paper concerned with nondensely defined fractional differential equations are pointed out, and correct formula of integral solutions is established by using integrated semigroup and some probability densities. Sufficient conditions for the existence are obtained by applying the Banach contraction mapping principle. …”
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  4. 164

    On the Initial Value Problem of Stochastic Evolution Equations in Hilbert Spaces by Xuping Zhang, Yongxiang Li, Pengyu Chen

    Published 2016-01-01
    “…The present paper studies the initial value problem of stochastic evolution equations with compact semigroup in real separable Hilbert spaces. The existence of saturated mild solution and global mild solution is obtained under the situation that the nonlinear term satisfies some appropriate growth conditions. …”
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  5. 165

    Dynamics of Stochastic Coral Reefs Model with Multiplicative Nonlinear Noise by Zaitang Huang

    Published 2016-01-01
    “…By support theorem and Hörmander theorem, the Markov semigroup corresponding to the solutions is to prove the Foguel alternative. …”
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  6. 166

    Exponentially Convex Functions on Hypercomplex Systems by Buthinah A. Bin Dehaish

    Published 2011-01-01
    “…The definition of such functions is a natural generalization of that defined on semigroup.…”
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  7. 167

    Spectral Analysis for a Wave/Plate Transmission System by Chengqiang Wang

    Published 2019-01-01
    “…Our result reads as follows: the spectrum of the infinitesimal generator of the semigroup associated with the system in question consists merely of an infinite sequence of eigenvalues which are all located in the open left half of the complex plane; the sequence of eigenvalues has the imaginary axis and another vertical line to the left of the imaginary axis as its asymptote lines; the energy of the system under consideration decreases to zero as time goes to infinity.…”
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  8. 168

    Finite AG-groupoid with left identity and left zero by Qaiser Mushtaq, M. S. Kamran

    Published 2001-01-01
    “…It is a nonassociative algebraic structure midway between a groupoid and a commutative semigroup. In this note, we show that if G is a finite AG-groupoid with a left zero then, under certain conditions, G without the left zero element is a commutative group.…”
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  9. 169

    On the H.-Q. Li inequality on step-two Carnot groups by Zhang, Ye

    Published 2023-10-01
    “…In this note we show that the gradient estimate of the heat semigroup, or more precisely the H.-Q. Li inequality, is preserved under tensorization, some suitable group epimorphism, and central sum. …”
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  10. 170

    Another special role of $ \mathrm{L}^\infty $-spaces-evolution equations and Lotz' theorem by Christian Budde

    Published 2024-12-01
    “…In this paper, we review the underappreciated theorem by Lotz that tells us that every strongly continuous operator semigroup on a Grothendieck space with the Dunford-Pettis property is automatically uniformly continuous. …”
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  11. 171

    (λ,μ)-Fuzzy Version of Ideals, Interior Ideals, Quasi-Ideals, and Bi-Ideals by Yuming Feng, P. Corsini

    Published 2012-01-01
    “…We introduced (λ,μ)-fuzzy ideals, (λ,μ)-fuzzy interior ideals, (λ,μ)-fuzzy quasi-ideals, and (λ,μ)-fuzzy bi-ideals of an ordered semigroup and studied them. When λ=0 and μ=1, we meet the ordinary fuzzy ones. …”
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  12. 172

    Asymptotic Stability of Fractional Stochastic Neutral Differential Equations with Infinite Delays by R. Sakthivel, P. Revathi, N. I. Mahmudov

    Published 2013-01-01
    “…A set of novel sufficient conditions are derived with the help of semigroup theory and fixed point technique for achieving the required result. …”
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  13. 173

    Existence and Attractivity for Fractional Evolution Equations by Yong Zhou, Jia Wei He, Bashir Ahmad, Ahmed Alsaedi

    Published 2018-01-01
    “…We establish sufficient conditions for the global attractivity of mild solutions for the Cauchy problems in the case that semigroup is compact.…”
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  14. 174

    Stability on coupling SIR epidemic model with vaccination by Helong Liu, Houbao Xu, Jingyuan Yu, Guangtian Zhu

    Published 2005-01-01
    “…We assume that the instantaneous death and infection rates depend on the age. Applying semigroup theory and so forth, we investigate the existence of equilibria. …”
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  15. 175

    Time-Delayed Feedback Control of a Hydraulic Model Governed by a Diffusive Wave System by Boumediène Chentouf, Nejib Smaoui

    Published 2020-01-01
    “…Thereafter, we invoke semigroup theory to substantiate that the closed-loop system has a unique solution in an energy space. …”
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  16. 176

    The zero dispersion limit for the Benjamin–Ono equation on the line by Gérard, Patrick

    Published 2024-07-01
    “…We also investigate the special case of an initial datum equal to the characteristic function of a finite interval, and prove the lack of semigroup property for this zero dispersion limit.…”
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  17. 177

    The Well-Posedness and Stability Analysis of a Computer Series System by Xing Qiao, Dan Ma, Fu Zheng, Guangtian Zhu

    Published 2013-01-01
    “…This study is devoted to discussing the unique existence of the solution and the stability of the studied system. In view of c0 semigroup theory, we prove the existence of a unique nonnegative solution of the system. …”
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  18. 178

    Quasigeostrophic Equations for Fractional Powers of Infinitesimal Generators by Luciano Abadias, Pedro J. Miana

    Published 2019-01-01
    “…In this paper we treat the following partial differential equation, the quasigeostrophic equation: ∂/∂t+u·∇f=-σ-Aαf,  0≤α≤1, where (A,D(A)) is the infinitesimal generator of a convolution C0-semigroup of positive kernel on Lp(Rn), with 1≤p<∞. …”
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  19. 179

    Functional differential equations with infinite delay in Banach spaces by Jin Liang, Tijun Xiao

    Published 1991-01-01
    “…Moreover, we discuss the relation between the exponential asymptotic stability of the zero solution of nonlinear functional differential equation with infinite delay in a Banach space and the exponential stability of the solution semigroup of the corresponding linear equation, and find that the exponential stability problem of the zero solution for the nonlinear equation can be discussed only in the exponentially fading memory phase space.…”
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  20. 180

    Commutator Theorems for Fractional Integral Operators on Weighted Morrey Spaces by Zhiheng Wang, Zengyan Si

    Published 2014-01-01
    “…Let L be the infinitesimal generator of an analytic semigroup on L2(Rn) with Gaussian kernel bounds, and let L-α/2 be the fractional integrals of L for 0<α<n. …”
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