Results 21 to 30 of about 2,797,632 (233)
PDE comparison principles for Robin problems [PDF]
Canadian Journal of Mathematics, 2021 AbstractWe compare the solutions of two Poisson problems in a spherical shell with Robin boundary conditions, one with given data, and one where the data have been cap symmetrized. When the Robin parameters are nonnegative, we show that the solution to the symmetrized problem has larger convex means. Sending one of the Robin parameters to $+\infty $ ,
openaire +4 more sources
Genetic algorithm search for stent design improvements [PDF]
, 2002 Copyright @ 2002 SpringerThis paper presents an optimisation process for finding improved stent design using Genetic Algorithms. An optimisation criterion based on dissipated power is used which fits with the accepted principle that arterial flows follow
Atherton, MA, Collins, MW, Tesch, K
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Existence and uniqueness for a crystalline mean curvature flow [PDF]
, 2016 An existence and uniqueness result, up to fattening, for a class of crystalline mean curvature flows with natural mobility is proved. The results are valid in any dimension and for arbitrary, possibly unbounded, initial closed sets.
Almeida +45 more
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Asymptotic behavior for cross coupled parabolic equations
Journal of Hebei University of Science and Technology, 2017 In order to better describe the heat transfer process of three kinds of mixed substances, namely the reaction of the reactants in the three chemical reactions, a class of three variable cross coupling with non parabolic equations of the whole existence ...
Yingzhen XUE
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Some results about semilinear elliptic problems on half-spaces
Mathematics in Engineering, 2020 We prove some new results about the growth, the monotonicity and the symmetry of (possibly) unbounded non-negative solutions of −∆u = f (u) on half-spaces, where f is merely a locally Lipschitz continuous function.
Alberto Farina
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, 2017 In this paper we propose a counterexample to the validity of the Comparison Principle and of the Sub and Supersolution Method for nonlocal problems like the stationary Kirchhoff Equation.
Iturriaga, Leonelo, Massa, Eugenio
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Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2017 We investigate the behaviour of weak solutions of boundary value problems for quasi-linear elliptic divergence second order equations in unbounded domains. We show the boundedness of weak solutions to our problem.
Wiśniewski Damian
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Advances in Nonlinear Analysis, 2014 We obtain a new Liouville comparison principle for weak solutions (u,v) of semilinear parabolic second-order partial differential inequalities of the form ut-ℒu-|u|q-1u≥vt-ℒv-|v|q-1v(*)$u_t -{\mathcal {L}}u- |u|^{q-1}u\ge v_t -{\mathcal {L}}v- |v|^{q-1}v\
Kurta Vasilii V.
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The 'ideal square' of logographic scripts and the structural similarities of Khitan script and han'gul [PDF]
, 2002 A comparison of the Khitan Small Script and Korean han'gŭl shows a striking structural similarity of two essentially phonetic scripts that combine 'letters' into large blocks.
Tranter, Nicolas
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