共查询到20条相似文献,搜索用时 46 毫秒
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本文建立一类不同于研究者所熟悉的三类非线性积分方程的一类新的积分方程,并利用不动点理论讨论所建立方程正解的存在性. 相似文献
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广义Lebesgue-Ramanujan-Nagell方程是数论中一类重要的Diophantine方程.本文介绍了此类方程的近期结果和尚未解决的问题. 相似文献
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一类CL方程的可逆变换,等价和准确解 总被引:1,自引:0,他引:1
本文给出了一类CL(守恒律)方程的可逆变量变换,借助这种变换表明一类CL方程是准确可解的,这类方程等价于线性方程,Burgers方程(包括高阶Burgers方程)或者KdV方程(包括mKdV方程),并求出了几个CL方程的准确解. 相似文献
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本文研究一类带奇异项的退化Grushin方程的零控问题.不同于Fourier分解的方法,通过选择一类特殊的势函数,我们证明了退化Grushin算子的Carleman估计.然后利用此Carleman估计,给出带奇异项的退化Grushin方程的观测不等式,获得该方程的零控结果. 相似文献
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《应用泛函分析学报》2017,(2)
本文研究等离子体中的高功率超短激光通道问题中出现的一类非线性Schr?dinger方程,利用变分原理,把一类非线性Schr?dinger方程转换为变分问题,再利用喷泉定理及对偶喷泉定理证明一类非线性Schr?dinger方程存在驻波解. 相似文献
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A. P. Ushakova 《Journal of Mathematical Sciences》1998,89(5):1582-1589
An estimate of stability of characterization of distribution types is obtained for the case of additive types. Under some
conditions, the estimate has the order ε1/3L(ε), where L(ε) is a slowly varying function.
Proceedings of the Seminar on Stability Problems for Stochastic Models, Moscow, Russia, 1996, Part I. 相似文献
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S. V. Kerov 《Journal of Mathematical Sciences》1988,41(2):995-999
The asymptotic distribution of tensors of degree N in symmetry types is studied in this paper.Translated from Zapiski Nauchnykh Seminarov Leningradskogo Otdeleniya Matematicheskogo Instituta im. V. A. Steklova AN SSSR, Vol. 155, pp. 181–186, 1986. 相似文献
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Mathematical Notes - We study the initial boundary-value problem for three-dimensional systems of equations of pseudoparabolic type. The system is similar to the Oskolkov system, but differs from... 相似文献
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本文研究了完全正则半群簇的子簇格[V+∩PV,V+∩PV]的某些格运算性质,我们证明了簇V+∩PV可分解为V与V+∩PV的并;对任意完全正则半群簇W,有W∩(V∨V+∩PV)=(W∩V)∨(W∩V+∩PV).特别地,我们得到了等式V+∩PV=V成立的若干条件. 相似文献
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Yu. N. Lin'kov 《Journal of Mathematical Sciences》1991,53(4):409-415
We give a characterization of the types of asymptotic discernibility of families of hypotheses in the case of hypothetical measures that are not, in general, mutually absolutely continuous. The case when the logarithm of the likelihood ratio admits an asymptotic expansion of the type of an expansion with local asymptotic normality is examined in detail. Examples are studied.Translated fromTeoriya Sluchainykh Protsessov, Vol. 15, pp. 64–71, 1987. 相似文献
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Siberian Mathematical Journal - We consider the lattice of subalgebras of a semifield U(X) of positive continuous functions on an arbitrary topological space X and its sublattice of subalgebras... 相似文献
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Tang Qi 《Annali di Matematica Pura ed Applicata》1993,164(1):77-87
The regularity of the minimizers of a special type of non-isotropic variational minimization problem is studied. The particularity of the potential of energy is that it has different growth rate with respect to different parts of the derivatives of the function. In particular, the model treated in this paper can be described as $$\Phi (Du) = |\partial _1 u|^2 + |\partial _2 u|^2 + |\partial _3 u|^2 + |\partial _3 u - |^p .$$ By using a result of P.Marcellini (cf. [4]) and perturbation method, it is proved that the minimizer of the Dirichlet boundary value problem is a function of W loc 1, ∞ . 相似文献