搜索结果: 151-165 共查到“理学 mathematics”相关记录1141条 . 查询时间(0.311 秒)
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：The regularity with respect to domains of the additive eigenvalues of super-quadratic Hamilton-Jacobi equation
超二次 哈密尔顿-雅可比方程 加性特征值域 规律性
2023/4/27
Viewingtheadditiveeigenvaluesasamapwithrespecttodomainperturbationbyscal- ing, we show that this map enjoys some regularity. Precisely, let c(λ) be the additive eigenvalue with respect to (1 + r(λ))Ω,...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Long time behavior of the Sine-Gordon equation
正弦 戈登方程 长时间行为 黎曼-希尔伯特问题
2023/4/26
We use the nonlinear steepest descent for Riemann-Hilbert problems to compute the long-time asymptotics of the solutions to the sine-Gordon equation whose initial condition belongs to some weighted So...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Balanced Boolean Functions with Good Autocorrelation Spectra and Their Applications
自相关谱 平衡 布尔函数
2023/4/26
In this talk we consider the maximum absolute value in the autocorrelation spectrum (not considering the zero point) of balanced Boolean function. The long-standing open question in this area is to ob...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：若干信息重构问题的理论与算法
信息重构 理论 算法
2023/4/26
数学作为一门基础学科，在科学的研究中扮演着无可替代的角色。但是数学的研究与工程应用之间存在着一道鸿沟。如何针对实际问题的需求，进行相关数学研究是目前应用数学与计算数学研究的一个热点方法。在本报告，我们主要介绍了我们团队最近的两项相关的研究成果。1、基于微分方程模型的由局部信息重构全局信息的问题，即从方程的内部观测值如何重构方程解的问题。这是一个具有重要实际和应用前景的问题。但是，数学理论的结果说明...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：复杂目标电磁建模与计算：区域分解方法研究及进展
复杂目标 电磁建模 区域分解方法
2023/4/24
电磁建模与计算在雷达目标探测与识别、隐身与反隐身、电磁兼容性分析、无线通讯等诸多领域有着重要的需求，是长期以来国内外同行关注的重点方向。随着科学计算方法和高性能计算技术的飞速发展，电磁建模与计算研究取得了长足的进步，然而针对计算目标越来越复杂，计算需求越来越高，电磁建模与计算面临一系列的挑战。本报告重点介绍了区域分解方法研究及进展，包括基于积分方程方法、有限元方法、有限元-边界元混合方法的区域分解...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Singular Solutions to the Yamabe Equation with Prescribed Asymptotics
规定渐近 山部方程 奇异解
2023/4/25
We study positive solutions of the Yamabe equation with isolated singularity and prove the existence of solutions with prescribed asymptotic expansions near singular points and an arbitrarily high ord...
近日，由北京大学主办/承办的FrontiersofMathematics和《数学进展》先后举行2023年编委会议。
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Computation and Design of Electrochemical Energy Storage Materials
电化学 储能材料 计算设计
2023/4/25
The key to electrochemical energy storage systems such as Li/Na-ion batteries is materials. The traditional method for exploring new materials is trial-and-error, which often takes a dozen years durin...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Smoothing invariant is equivalent to harmonic
平滑不变 等价 谐波 调和函数
2023/4/23
It is well known that harmonic function is smoothing invariant when convolved with the standard mollifier, which gives a quick proof of the smoothness of the harmonic function. In this talk, we will c...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Minimal model program for generalized pairs
广义对 最小 模型程序
2023/4/23
Generalized pairs are a natural structure in birational geometry that first appeared in Kodaira’s canonical bundle formula for elliptic fibrations. They were formally introduced by Birkar and Zhang in...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Energy stability and error analysis of a maximum bound principle preserving scheme for the dynamical Ginzburg-Landau equations of Superconductivity
超导动力学 金茨堡-朗道方程 最大界界原理 能量稳定性 误差分析
2023/4/25
We focus on numerical study of the dynamical Ginzburg-Landau equations under the temporal gauge, and propose a decoupled numerical scheme based on the finite element method. For the variable A, the se...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Futaki invariants and Yau’s conjecture on the Hull-Strominger system
Futaki invariants 丘成桐 赫尔-斯特罗明格系统 猜想
2023/4/23
In this talk, we will talk about Fernandez-Molina’s paper”Futaki invariants and Yau’s conjecture on the Hull-Strominger system”. We will introduce a new obstruction to the existence of solutions of th...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Identities, inequalities and congruences for odd ranks and k-marked odd Durfee symbols
奇数秩 k标记 奇数杜菲符号 恒等式 不等式 全等
2023/4/23
In 2007, Andrews introduced the odd rank of odd Durfee symbols. Let N^0 (m,n) denote the number of odd Durfee symbols of n with odd rank m, and N^0 (r,m;n) be the number of odd Durfee symbols of n wit...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Conformally variational Riemannian invariants and their related topics
共形变分 黎曼不变量 主题
2023/4/23
It is well known that scalar curvature plays a fundamental role in general relativity. As its analogue, conformally variational Riemannian invariants (CVIs) is a category of fundamental scalar-type cu...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Fast Numerical Evaluation of Generalized Todd Polynomials
广义托德多项式 的快速数值 评估
2023/4/23
Fast Numerical Evaluation of Generalized Todd Polynomials.