查询词典 permutation operator

The problem of magic square has a long history; furthermore, it is a complicated permutation and combination problem.

幻方问题是具有悠久历史的复杂排列组合问题。

In this paper, permutation distance is proposed to evaluate several protein multiple sequence alignment algorithms that are widely used currently.

本文提出置换距离法，对当前流行的几种蛋白质多序列比对算法进行对比评价。

The reader will need to know some basic finite group theory: the Sylow theorems and how to use them and some elementary properties of permutation groups and solvable and nilpotent groups.

读这本书之前，读者需要一些有限群论的基本知识，如Sylow定理及其应用，置换群，可解群和幂零群的基本性质等等。

The upper bound of the differential probability is developed for the completely nonsingular matrix based substitution permutation network....

给出了基于全非奇异矩阵的代替置换网络的差分概率上界。

Let A be a nonsingular nth-order real matrix, then cond_p =||A||_p||A~(-1)||_p =1(p= 1,∞), if and only if A = cpσ, where c is a positive constant, p is a permutation matrix, or is a diagonal mat...

设A为n阶非异实矩阵，则矩阵A的求逆p-范数条件数等于1的充要条件为A=cpσ，其中c为正常数，σ是置换阵，其对角元都等于+1或-1。

If we allow these 10105 molecules to randomly permutate, the rate of permutation is ten thousand (104) times per second. If the age of the universe was thirty billion years (1018 seconds), then from the beginning of the universe until now, the total permutations were 10127 times (10105x1018x104), which is not even enough time to develop one correct nucleotide sequence for one molecule of DNA.

如果让这10105个分子随机组合，令组合的速率为每秒一万次（104），假设宇宙的年龄为三百亿年（1018秒），那么，从宇宙形成到现在，一共可以产生的组合方式是10127次（10105x1018x104），还不足以产生一个有正确核亘酸排列组合序列的DNA分子2！

The symmetry group is the permutation group acting to exchange particles of the same type.

对称组是置换群代理交换颗粒同一类型。

This paper studies knots from a group theory point of view. A new method has been constructed that transforms a knot group to a permutation group, so as to better understand the nature of knots.

本文是从群的角度对纽结进行研究，构造出了一种从纽结群到置换群的表示，可以更好的反映纽结的性质。

In response to the current debates on the concept of ethnic group or ethnicity, the author made a review of the permutation of ethnic group and the concepts to which it was related in the West.

对族群以及与它相关的一些概念在西方的变化作了一个简要追溯。

This observation suggests that the relationship between classical and quantum systems is not so clear as it is often portrayed and that the permutation group could also be a part of the same universal symmetry as gauge invariance.

观测表明，这之间的关系经典和量子系统就不那么明确，因为它往往是描述，而置换群也可能是出于同样的普遍的对称性作为规范不变性。

The receding calculations and experiment analyses in this subject are built on the blood cast of pig tongue.

本研究课题的前期工作是采用猪舌血管铸型模拟人舌而进行的数值计算与实验分析。

"Each human infection constitutes an opportunity for genetic modification of the virus through reassortment, mutation, or both...."

&每一次人类的感染都暗藏着一次基因修改的机会，无论是通过病毒的整合、突变或者兼而有之。。。。&