查询词典 null algebra

It is shown that a radical square zero algebra is wild if and only if it is of Corner's type, and it is strictly wild if and only if it is endo-wild. This gives a negative answer to a problem posed by Simson.

此外，证明了根方零代数是野的当且仅当它具有Corner型；是严格野的当且仅当它是Endo-wild的，从而给出Simson问题的否定回答。

Economic applicable housing retail, to the base price as the basis for calculating floor, a post, but the whole building or the price should be zero and algebra.

经济适用住房零售时，要以基准价格为基础，计算楼层、朝向差价，但整幢楼增减的差价代数和应为零。

D Whyte, in his "analysis Easy"(analyticem is Inartem agoge,1591) works, the first systematic use of symbols of unknown value calculation, Operators made with a number of symbols of the difference between the provisions of the algebra and arithmetic boundaries.

韦达在他的《分析方法入门》（Inartem analyticem isagoge，1591）著作中，首次系统地使用了符号表示未知量的值进行运算，提出符号运算与数的区别，规定了代数与算术的分界。

Giving the more explicit boundary conditions and using Biconjugate gradients stabilized method to solve the linear algebra equation with large coefficient matrix, we get a fast algorithm of highprecision to calculate effectively electrical and magnetic fields in the whole space.

由于提出了简洁的边界条件，采用了解大型系数矩阵方程组的双共轭梯度稳定解法，所实现的三维交错采样有限差分数值模拟算法具有迭代收敛稳定、计算精度高、速度快等特点。

By using constructive methods and complicated techniques of matrices, necessary and sufficient conditions for the existence of selfconjugate solution, perselfconjugate solution, centrosymmetric solution, bisymmetric solution, skewselfconjugate solution, skewperselfconjugate solution, skewcentrosymmetric solution, skewbisymmetric solution and various interlaced solutions over a finite central algebra Ω to systems of generalized Sylvester matrix equations overΩ are presented.

利用构造方法和复杂的矩阵技巧，研究了有限维中心代数上的多项式环Ω上的广义Sylvester矩阵方程组在Ω上有自共轭解，斜自共轭解，广自共轭解，斜广自共轭解，中心对称解，斜中心对称解，双对称解，斜双对称解及其各种交错解的充要条件。

Firstly, the course reviews the basic knowledge about matrix algebra and linear model, and introduce the BLUP for mixed linear model, then, learn the approaches to contruct and solve various animal models, including single trait animal model, repeatability model, maternal model, threshold model, random regression model, non-additive model and multiple traits model, finally, train application of animal model to animal genetic evaluation by means of a software on estimation of breeding values.

本课程首先回顾有关矩阵代数和线性模型的基础知识，介绍线性混合模型的BLUP求解方法，然后根据动物性状和动物育种资料的类型和特点，具体讲授不同种类动物模型，包括单性状动物模型、单性状重复率模型、单性状母体效应模型、单性状阈模型、单性状随机回归模型、单性状非加性效应模型和多性状动物模型等的建立和求解方法。最后，结合动物育种值估计软件，进行动物模型在动物生产性能的遗传评估中的应用训练。

It seemed to them that the crux of the curr t confusion lay in the inadequate foundation for algebra.

在他们 看来，当时的含糊不清的原因在于代数基础的不完善。

Finally,we prove that the left global dimension of a DG algebra A is larger than or equal to the dimension of the triangulated categories Dand D~c.

最后我们证明DG代数A的整体维数是三角范畴D以及D~c的维数的一个上界。

Three century Diophantine one of the outstanding contribution that Greece algebra simplify, simplify algebraic created.

三世纪的丢番图的杰出贡献之一，就是把希腊代数学简化，开创了简化代数。

Now the young man reads interpoint Braille, uses Nemeth maths code, and is able to complete pre-algebra equations on the Perkins.

现在，他不仅可以摸读双面盲文，使用内梅特数学代码，还能在珀金斯打字机上完成代数等式。

Although translator has turned from being a crystal ball by which the original culture can unrestrainedly penetrate to another crystal ball by which the target culture can freely traverse, the translator's personal embodiment, in the process of cognitive act, are still absent in translation studies. Translators are still subjects without body or simply disembodied subjects.

译者虽然由原语文化可以自由穿透的玻璃球变成了译语文化可以自由穿越的玻璃球，但译者认知过程中的个体体验在翻译研究中依然缺席，译者依然仅仅是一个没有躯体体验的主体。

Chillingly, he claimed our technology is 'not nearly as sophisticated' as theirs and "had they been hostile", he warned 'we would be been gone by now'.

令人毛骨悚然的，他声称我们的技术是'并不那么复杂，像他们一样，和"如果他们敌意"，他警告说，'我们将现在已经过去了。