Results 31 to 40 of about 3,954,992 (288)
Selections and weak orderability [PDF]
Fundamenta Mathematicae, 2009 We answer a question of van Mill and Wattel by showing that there is a separable locally compact space which admits a continuous weak selection but is not weakly orderable. Furthermore, we show that a separable space which admits a continuous weak selection can be covered by two weakly orderable spaces.
Michael Hrušák, Iván Martínez-Ruiz
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Joint weak hazard rate order under non-symmetric copulas
Dependence Modeling, 2016 A weak version of the joint hazard rate order, useful to stochastically compare not independent random variables, has been recently defined and studied in [4]. In the present paper, further results on this order are proved and discussed.
Pellerey Franco, Spizzichino Fabio
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Second-order weak lensing from modified gravity [PDF]
, 2011 We explore the sensitivity of weak gravitational lensing to second-order corrections to the spacetime metric within a cosmological adaptation of the parameterized post-Newtonian framework.
Caldwell, Robert R. +2 more
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Impact of Weak Nanoparticle Induced Disorder on Nematic Ordering
Crystals, 2019 Dilute mixtures of nanoparticles (NPs) and nematic liquid crystals (LCs) are considered. We focus on cases where NPs enforce a relatively weak disorder to the LC host.
Dejvid Črešnar +7 more
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Sequences of weak solutions to a fourth-order elliptic problem
Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2020 This paper contains some results of existence of infinitely many solutions to an elliptic equation involving the p(x)-biharmonic operator coupled with Navier boundary conditions where the nonlinearities depend on two real parameters and do not possess ...
Filippo Cammaroto
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Second-Order Weak Approximations of CKLS and CEV Processes by Discrete Random Variables
Mathematics, 2021 In this paper, we construct second-order weak split-step approximations of the CKLS and CEV processes that use generation of a three−valued random variable at each discretization step without switching to another scheme near zero, unlike other known ...
Gytenis Lileika, Vigirdas Mackevičius
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A High Order Accurate and Effective Scheme for Solving Markovian Switching Stochastic Models
Mathematics, 2021 In this paper, we propose a new weak order 2.0 numerical scheme for solving stochastic differential equations with Markovian switching (SDEwMS). Using the Malliavin stochastic analysis, we theoretically prove that the new scheme has local weak order 3.0 ...
Yang Li +3 more
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Weak order for the discretization of the stochastic heat equation [PDF]
, 2007 In this paper we study the approximation of the distribution of $X_t$ Hilbert--valued stochastic process solution of a linear parabolic stochastic partial differential equation written in an abstract form as $$ dX_t+AX_t dt = Q^{1/2} d W_t, \quad X_0=x ...
Debussche, Arnaud, Printems, Jacques
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On the Weak Order of Orthogonal Groups [PDF]
Communications in Algebra, 2014 A structure of a complete lattice (in the sense of a poset) is defined on the underlying set of the orhtogonal group of a real Euclidean space, by a construction analogous to that of the weak order of a Coxeter system in terms of its root system. This gives rise to a complte rootoid in the sense of Dyer, with the orthogonal group as underlying group.
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A New Simplified Weak Second-Order Scheme for Solving Stochastic Differential Equations with Jumps
Mathematics, 2021 In this paper, we propose a new weak second-order numerical scheme for solving stochastic differential equations with jumps. By using trapezoidal rule and the integration-by-parts formula of Malliavin calculus, we theoretically prove that the numerical ...
Yang Li +3 more
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