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吴新谋是我国著名数学家。中国偏微分方程研究事业的主要创始人之一。在我国偏微分方程事业发展的历程上,吴新谋的名字是不可磨灭的。在中华人民共和国建立前,中国只有蒋硕民等个别人做过偏微分方程论的研究。正是在几乎空白的条件下,吴新谋首先在中国科学院数学研究所组建了微分方程组(早期成员有丁夏畦、王光寅、孙和生、邱佩璋等),并自编讲义,开设了偏微分方程论讲座。1954年夏,受高等教育部委托,吴新谋在北京大 相似文献
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《高等数学研究》2006,9(6):F0002-F0002
华罗庚,1910年11月12日出生于江苏省金坛县,中共党员.父亲以开杂货铺为生.华罗庚幼时爱动脑筋,因思考问题过于专心常被同伴们戏称为“罗呆子”.他进入金坛县立初中后,其数学才能被老师王维克发现,并被尽心尽力予以培养.初中毕业后,华罗庚曾入上海中华职业学校就读,因交不出学费而中途退学,故一生只有初中毕业文凭.此后,他开始顽强自学,每天学习时间达10个小时以上.他用5年时间学完了高中和大学低年级的全部数学课程.1928年,他不幸染上伤寒病,新婚妻子的细心照料使他挽回了生命,却落下左腿残疾.20岁时,他以一篇论文轰动数学界,被清华大学聘用… 相似文献
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李善兰,1811年1月2日生于浙江海宁县硖石镇.原名李心兰,字竞芳.儿童时代的李善兰聪明好学,9岁那年,他在父亲的书房里发现了《九章算术》.书中丰富的内容深深地吸引了他,使他感到了从未有过的新奇乐趣.13岁那年,一个偶然的机会他得到了一本《几何原本》.此书当时仅在我国的一些数学家中间流传,尚未普及.李善兰靠自学读通 相似文献
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潘承洞于1934年5月26日生于江苏省苏州市一个旧式大家庭中,他的父亲潘子起,号艮斋.母亲高嘉懿,江苏省常熟市人,出身贫苦家庭,不识字.他们有一女两子.父亲的忠厚,母亲的劳动妇女的优良品德与严格管教,使子女能够健康成长,激励他们奋发图强.潘承洞在19... 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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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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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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S. V. Solov' ev 《Journal of Mathematical Sciences》1982,20(4):2370-2376
In this paper we consider derivations in the (&, )-fragment of the intuitionistic propositional calculus. As is known, replacement of any occurrence of a formula [F] in a sequent S by an occurrence of the formula [p], where p is a new propositional variable, with the simultaneous addition to the antecedent of the formula F p or p F depending on the sign of the occurrence of F in S, leaves the derivability unchanged. We give a proof of the fact that the natural extension of this transformation to derivations preserves the relation of equivalence of derivations, i.e., transformed derivations are equivalent if and only if the originals are equivalent. (Derivations are considered equivalent if certain of their normal forms coincide, or, what is the same, if their deductive terms coincide.) It is proved that by the iteration of this transformation, each derivation of an arbitrary sequent S can be transformed into a derivation of a sequent S, depending only on S, whose succedent is a variable, and in the antecedent there occur only formulas of the form a,a & b, a b,,(a b) c, a & b c, a (b & c), wherea, b, c are variables. Here if S is balanced, then S is also balanced. (A sequent is called balanced if each variable occurs in it no more than twice.) The familiar correspondence between certain concepts of the theory of categories and concepts of the theory of proofs allows one to assert that there has been constructed a univalent functor, mapping a free Cartesian closed category into itself.Translated from Zapiski Nauchnykh Seminarov Leningradskogo Otdeleniya Matematicheskogo Instituta im. V. A. Steklova AN SSSR, Vol. 88, pp. 197–207, 1979. 相似文献
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B. P. Osilenker 《Mathematical Notes》1969,6(3):621-627
Sufficient conditions are obtained in terms of matrix elements for the boundedness of Lebesgue functions of linear methods of summation of expansions in orthogonal systems of polynomial type.Translated from Matematicheskie Zametki, Vol. 6, No. 3, pp. 277–286, September, 1969. 相似文献