一类核密度含高阶奇性Cauchy型积分的边值定理

本文推广「１」，「６」中的结果，讨论了一类开口弧核密度含高阶奇且情形更一般的Ｃａｕｃｈｙ型积分的边值定理，积分号下求导及Ｈ连续性。     

具高阶奇性解的奇异积分方程的推广Noether定理

本文给出解具高阶奇性时奇异积分方程的推广Ｎｏｅｔｈｅｒ定理．     

数学奥林匹克问题选登

1991年6月号问题解答 (解答由供题人给出) 1.设x≥y≥1,求证: 并确定等号成立的条件。解设x 1=2p~2,y 1=2q~2,其中P≥q≥1,则欲证不等式等价于若p≠q,则上式等价于易证p q-1≥(两端平方,整理有2(p-1)(q-1)≥0) 因而只须证 pq(p q)≥(1 pq)(p q-1)(p-1)(q-1)≥0 由p≥q≥1知上式成立。故欲证不等式成立,其中等号成立当且仅当p=1或q=1或p=q,即x=y或x=1或y=1 注:易证对x≥y≥z>0,欲证不等式与下式     

SINGULAR INTEGRAL EQUATIONS ALONG AN OPEN ARC WITH SOLUTIONS HAVING SINGULARITIES OF HIGHER ORDER

In this paper, the difficulties on calculation in solving singular integral equations are overcome when the restriction of curve of integration to be a closed contour is cancelled. When the curve is an open arc and the solutions for singular integral equations possess singularities of higher order, the solution and the solvable condition for characteristic equations as well as the generalized Noether theorem for complete equations are given.     

具高阶奇性解的特征奇异积分方程(Ⅰ)

给出具高阶奇性解的特征奇异积分方程解的表示及可解条件     

SINGULAR INTEGRAL EQUATIONS ON THE REAL AXIS WITH SOLUTIONS HAVING SINGULARITIES OF HIGHER ORDER

We transform the singular integral equations with solutions simultaneously having singularities of higher order at infinite point and at several finite points on the real axis into ones along a closed contour with solutions having singularities of higher order, and for the former obtain the extended Neother theorem of complete equation as well as the solutions and the solvable conditions of characteristic equation from the latter. The conclusions drawn by this article contain special cases discussed before.     

应用高阶奇异积分计算普通积分的粘合方法

本文引入一种计算普通积分的所谓“粘合法”技巧,并结合路见可提出的(复)高阶奇异积分及推广留数定理完成对(0.2)型积分的完整讨论;利用这种技巧也首次举出应用高分数阶奇异积分计算普通积分的例子;最后还举出多个高阶极点计算普通积分及粘合法与绕数概念相结合的有趣实例,这些实例在一定程度上说明高阶奇异积分和推广留数定理的实际应用前景。     

实轴上几种高阶奇异积分的换序公式

给出实轴上几种类型高阶奇异积分的换序公式,由于∞点的特异性,对公式（４）,（９）尤加特别注意。     

F-Ⅰ型算子核为退化核的奇异积分方程

用 Vekua正则化方法、Fredholm理论及退化核积分方程理论 ,给出 Fredholm第一型核为退化核的奇异积分方程解和可解条件 ,对 F- 型核为一般连续核和弱奇性核的奇异积分方程也有若干结果 .     

开口弧上高阶奇异积分B—P型换序公式

利用单侧高阶奇异积分概念，把［４］和［１］中各型高阶奇异积分的Ｂｅｔｒａｎｄ－Ｐｏｉｎｃａｒｅ’换序公式推广到开口弧情况，其证明方法对封闭弧当然有效，但曲线开口时过程复杂得多。