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We show that the equations of motion in one partial integrable case of Goryachev in the rigid body dynamics can be separated by the appropriate change of variables,the new variables x, y being hyperel...
We have dramatically extended the zero eld susceptibility series at both high and low temperature of the Ising model on the square, triangular and honeycomb lattices, and used these data to calculate...
Tollefson described a variant of normal surface theory for 3-manifolds, called Q-theory, where only the quadrilateral coordinates are used.Suppose M is a triangulated, compact, irreducible, boundary-i...
In the first five sections, we deal with the class of probability measures with asymptotically periodic Verblunsky co-efficients of p-type bounded variation. The goal is to investigate the perturbati...
Using the notion of h-subdifferential, we characterize both first and second order differentiability of h-convex functions in stratified groups. We show that Aleksandrov’s second order differentiabili...
Brown (1980, 1981) proved that the renewal function is concave if the inter-renewal istribution is DFR (decreasing failure rate), and conjectured the converse. This note settles Brown’s conjecture wi...
We study the quantum Hamilton-Jacobi structure of the recently obtained exactly solvable models, related to the newly discovered exceptional polynomials. The fact that the eigenfunctions have zeros an...
We construct a multiply connected domain in R2 for which the second eigenfunction of the Laplacian with Robin boundary condi-tions has an interior nodal line. In the process, we adapt a bound of Donne...
We present explicit Pieri formulas for Macdonald’s spherical func-tions (or generalized Hall-Littlewood polynomials associated with root sys-tems) and their q-deformation the Macdonald polynomials. Fo...
In the system made of Korteweg-de Vries with one source, we first show by applying the Painleve' test that the two components of the source must have the same potential. We then explain the natural in...
利用匹配方法研究了一类具有二个转向点的大参数奇摄动方程.得出了解在不同范围 内的渐近表示式.
The paper presents the conditions which guarantee that for some positive value of $\mu$ there are positive solutions of the differential equation $(\phi(x'))'+\mu Q(t,x,x')=0$ satisfying the Dirichlet...
本文研究带齐次Dirichlet 边界条件的强耦合椭圆系统,首先证明了当食饵和捕食者的扩散率足够大, 或者出生率足够小时,系统不存在共存现象, 并给出半平凡解存在的充分条件.然后利用Schauder不动点定理, 得到强耦合的椭圆问题至少有一个正解存在的充分条件.该条件说明只要捕食者的内部竞争强, 物种的交叉扩散相对弱,或者捕获率足够小,物种的交叉扩散相对弱,强耦合系统就至少有一个正解存在.
本文构造了紧连通流形上非退化扩散过程的一些耦合,并使用随机分析的方法证明这些耦合是成功的,进一步地,耦合时间一阶矩有限。最后,我们使用耦合方法研究了扩散过程依全变差范数的收敛速度。
马氏场的遍历性及耦合          2007/12/12
给定一族具有相同的条件分布的马氏场,本文找出了它们一致弱遍历的充要条件.在此基础上,我们还证明了一类特殊的强马氏场能够一致成功耦合的充要条件是它们一致弱遍历.

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