•  近日,中国科学技术大学几何与物理研究中心特任教授陈杲的研究论文《J方程和超临界厄米特-杨振宁-米尔斯方程的变形》在线发表在《数学新进展》(Inventiones Mathematicae)上。

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  • A research team has developed mathematical model to predict seizures that will give epilepsy patients an accurate warning five minutes to one hour before they are likely to experience a seizure.

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  • Implies

    2021-03-01

    "Implies" is the connective in propositional calculus which has the meaning "if A is true, then B is also true." In formal terminology, the term conditional is often used to refer to this connective (...

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  • Order of Magnitude

    2021-03-01

    Physicists and engineers use the phrase "order of magnitude" to refer to the smallest power of ten needed to represent a quantity. Two quantities A and B which are within about a factor of 10 of each ...

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  • Exists

    2021-03-01

    If there exists an A, this is written exists A. Similarly, "A does not exist" is written notexists A. exists is one of the two mathematical objects known as quantifiers. The Wolfram Language expres...

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  • For All

    2021-03-01

    If a proposition P is true for all B, this is written P forall B. forall is one of the two so-called quantifiers, and translates the universal quantifier forall . The Wolfram Language expression Fo...

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  • A cylindrical algebraic decomposition that omits sets of measure zero. Generic cylindrical algebraic decompositions are generally much quicker to compute than are normal decompositions. Generic cylind...

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  • Graph Coarseness

    2021-03-01

    The coarseness xi(G) of a graph G is the maximum number of edge-disjoint nonplanar subgraphs contained in a given graph G. The coarseness of a planar graph G is therefore xi(G)=0. The coarseness of...

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  • SD猜想是Clay数学研究所在2000年提出的七大千禧年数学难题之一。指出了椭圆曲线的Mordell-Weil 群和它的L-函数的关系。BSD猜想分为秩部分和公式部分。BSD猜想的秩部分可以陈述为:

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  • 对经典不可压缩Navier-Stokes 方程:关于该问题的整体正则性是Clay研究所公布的七大千禧年问题之一。我们[7]证明了只要初始速度的一个方向导数在临界函数空间中充分小时,该问题存在唯一整体解,根据此条件, 我们构...

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  • 2021年1月27日,中国科学院数学与系统科学研究院张世华研究员与中国科学院昆明动物研究所宿兵研究员、北京大学生命科学学院李程研究员团队合作,以“3D Genome of macaque fetal brain reveals evolutionary innovat...

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  • Asymptotic

    2021-03-01

    Informally, the term asymptotic means approaching a value or curve arbitrarily closely (i.e., as some sort of limit is taken). A line or curve A that is asymptotic to given curve C is called the asymp...

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  • Asymptotic Notation

    2021-03-01

    Let n be an integer variable which tends to infinity and let x be a continuous variable tending to some limit. Also, let phi(n) or phi(x) be a positive function and f(n) or f(x) any function. Then Har...

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  • 该研究针对新冠等传染病提出了一种个性化隔离规则,对不同特征的个体确定不同的隔离期。该规则提出是基于求解概率模型优化问题的思想方法,在能确保疫情防控的条件下,使得平均隔离时间达到最短,我们获得了这一意义...

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  • 继第四代同步辐射光源之后,科学家正在挑战新纪录。2月25日《自然》杂志上线的一篇论文中,研究者实验展示了一种新型粒子加速器光源原理,该原理被称为“稳态微聚束”(steady-state microbu...

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