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101.
邵孝湟 《应用数学和力学(英文版)》1991,12(10):1001-1008
In this paper,using the differentiability of the solution with respect to the initial value and the parameter,we present a method which,different from Liapunov’s direct method.will determine the stability of the non-stationary solution of the initial value problem when the non-stationary solution remains unknown. 相似文献
102.
O. V. Pugachev 《Mathematical Notes》1999,65(3):315-325
We generalize the Airault-Malliavin theorem on the existence of surface measures on infinite-dimensional spaces with Gaussian
measures on surfaces. We prove that the sets of capacities generated by Sobolev classes on infinite-dimensional spaces are
dense.
Translated fromMatematicheskie Zametki, Vol. 65, No. 3, pp. 377–388, March, 1999. 相似文献
103.
The solutions of the dfferential equation Lnx + a0(t)x = 0, where Ln is a disconjugate operator and a0 is of one sign, are studied according to their behavior as t → ∞. We prove equivalence theorems between solutions of this equation and its adjoint in terms of property A and property B. These theorems generalize the results known for n = 3 and for odd order binomial equations. Some applications are given too. 相似文献
104.
A high-order numerical method for the nonlinear Helmholtz equation in multidimensional layered media
We present a novel computational methodology for solving the scalar nonlinear Helmholtz equation (NLH) that governs the propagation of laser light in Kerr dielectrics. 相似文献
105.
G. S. Khadekar Rupali Wanjari Cenap Ozel 《International Journal of Theoretical Physics》2009,48(9):2550-2557
In this study we have analyzed the Kaluza-Klein type Robertson Walker (RW) cosmological model by considering variable cosmological
constant term Λ of the form:
,
and Λ∼ρ in the presence of strange quark matter with domain wall. The various physical aspects of the model are also discussed. 相似文献
106.
Luigi Ambrosio Estibalitz Durand-Cartagena 《Rendiconti del Circolo Matematico di Palermo》2009,58(1):1-10
This note is devoted to the differentiability properties of -Lipschitz maps defined on abstract Wiener spaces and with values in metric spaces (Y,d
Y
). We prove the existence γ-a.e. of local seminorms in the Cameron-Martin space which allow to compute the metric derivative of the map.
Second Author partially supported by DGES (Spain) MTM2006-03531. 相似文献
107.
Verena Bögelein 《Annali di Matematica Pura ed Applicata》2009,188(1):61-122
In the present paper we provide a broad survey of the regularity theory for non-differentiable higher order parabolic systems
of the type
Initially, we prove a partial regularity result with the method of A-polycaloric approximation, which is a parabolic analogue of the harmonic approximation lemma of De Giorgi. Moreover, we prove
better estimates for the maximal parabolic Hausdorff-dimension of the singular set of weak solutions, using fractional parabolic
Sobolev spaces. Thereby, we also consider different situations, which yield a better dimension reduction result, including
the low dimensional case and coefficients A(z, D
m
u), independent of the lower order derivatives of u.
相似文献
108.
Besides other things we prove that if , , locally minimizes the energy
, with N-functions a ≤ b having the Δ2-property, then . Moreover, the condition
for all large values of t implies . If n = 2, then these results can be improved up to for all s < ∞ without the hypothesis . If n ≥ 3 together with M = 1, then higher integrability for any exponent holds under more restrictive assumptions than .
相似文献
109.
We consider a damped sine-Gordon equation with a variable diffusion coefficient. The goal is to derive necessary conditions for the optimal set of parameters minimizing the objective function J. First, we show that the solution map is continuous under a weak assumption on the topology of the admissible set P. Then the solution map is shown to be weakly Gâteux differentiable on P, implying the Gâteux differentiability of the objective function. Finally we show the Fréchet differentiability of J. The optimal set of parameters is shown to satisfy a bang–bang control law. 相似文献
110.
Takao Yamazaki 《Mathematische Zeitschrift》2009,261(1):109-121
We prove that the kernel of the reciprocity map for a product of curves over a p-adic field with split semi-stable reduction is divisible. We also consider the K
1 of a product of curves over a number field.
相似文献