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941.
An ergodic study of Painlevé VI is developed. The chaotic nature of its Poincaré return map is established for almost all
loops. The exponential growth of the numbers of periodic solutions is also shown. Principal ingredients of the arguments are
a moduli-theoretical formulation of Painlevé VI, a Riemann–Hilbert correspondence, the dynamical system of a birational map
on a cubic surface, and the Lefschetz fixed point formula.
Dedicated to Professor Masuo Hukuhara on his 100th birthday. 相似文献
942.
Summary The problem is to estimate the mean of the normal distribution under the situation where there is vague information that the
mean might be equal to zero. A minimax property of the preliminary test estimator obtained by the use of AIC (Akaike information
Criterion) procedure is proved under a loss function based on the Kullback-Leibler information measure. 相似文献
943.
Zu-han LIU Department of Mathematics Xuzhou Normal University Xuzhou China 《中国科学A辑(英文版)》2007,50(12):1705-1734
In this paper,we study the asymptotic behavior of solutions of the Ginzburg-Landau equation with impurity.We prove that,asymptotically,the vortex-lines evolve according to the mean curvature flow with a forcing term in the sense of the weak formulation. 相似文献
944.
利用强子-强子碰撞的模型PYTHIA以及核-核碰撞的模型RQMD比较了各种电荷起伏测量量的快度依赖性,结果发现,这些测量量对快度的依赖性依赖于模型. 但是,电荷关联能很好地测量整体电荷守恒以及短程快度关联性质. 因此,被认为是一个好的反应电荷起伏的测量量. 相似文献
945.
S. Vandervelde 《Journal of Number Theory》2003,100(1):184-202
We introduce a formula for the Mahler measure of axy+bx+cy+d with complex coefficients a,b,c, and d and give examples which demonstrate a connection with L-functions. We then prove a generalization of Maillot's formula when the coefficients are real. Next, we discuss operations on the coefficients which fix the Mahler measure. Finally, we prove an alternate formulation of the main result in order to calculate the Mahler measure of a two-parameter family of polynomials in three variables. 相似文献
946.
Ambar N. Sengupta 《Journal of Geometry and Physics》2003,47(4):398-426
We prove that integration over the moduli space of flat connections can be obtained as a limit of integration with respect to the Yang–Mills measure defined in terms of the heat-kernel for the gauge group. In doing this we also give a rigorous proof of Witten’s formula for the symplectic volume of the moduli space of flat connections. Our proof uses an elementary identity connecting determinants of matrices along with a careful accounting of certain dense subsets of full measure in the moduli space. 相似文献
947.
Andrzej Lasota 《Journal of Mathematical Analysis and Applications》2007,335(1):669-682
A generalized version of the Tjon-Wu equation is considered. Solutions of this equation are functions with values in the space of probability measures on [0,∞). We prove that the stationary solution μ∗ of the equation has the following property: Either μ∗ is supported at one point or suppμ∗=[0,∞). Moreover we show that in the second case the distribution function of μ∗ is continuous. Some open questions are discussed. 相似文献
948.
In this paper, it is proved that the predual bimodule of the measure algebra of an infinite discrete group is not injective despite the fact that the measure algebra of an amenable group is amenable in the sense of Connes. Thus the well-known result of Khelemskii (claiming that, for a von Neumann algebra, Connes-amenability is equivalent to the condition that the predual bimodule is injective) cannot be extended to measure algebras. Moreover, for a discrete amenable group, we give a simple formula for a normal virtual diagonal of the measure algebra. It is shown that a certain canonical bimodule over the measure algebra is not normal. 相似文献
949.
950.
Ilias Maglogiannis 《Journal of Mathematical Modelling and Algorithms》2003,2(3):277-294
During the last years, there has been a significant increase in the level of interest in image morphology, full-color image
processing, image data compression, image recognition and knowledge based analysis systems for medical images. The present
paper describes the implementation and tests the efficiency of algorithms dealing with the issues of segmentation and registration
of digital images containing skin lesions. Those steps are considered of great importance in computer based characterization
systems as they are responsible for the isolation of pathological findings and the matching of sequential images during follow-up
studies in medical imaging.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献