带伤害
发表于 2025-3-26 21:51:42
Richard A. Harshman,Elizabeth HampsonBasic properties of groups are collected in this chapter. Here are exposed the concepts of order of a group (any cardinal number) or of a group element (finite or countable order), subgroup, coset, the three fundamental theorems of homomorphisms, semi-direct products and so forth.
残忍
发表于 2025-3-27 04:51:29
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Psychogenic
发表于 2025-3-27 07:45:19
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padding
发表于 2025-3-27 11:37:53
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Tortuous
发表于 2025-3-27 15:02:09
Permutation Groups and Group Actions,m the flexibility one has in choosing the set being acted on. Odd and even finitary permutations, the cycle notation, orbits, the basic relation between transitive actions and actions on cosets of a subgroup are first reviewed. For finite groups, the paradigm produces Sylow’s theorem, the Burnside t
conifer
发表于 2025-3-27 18:06:09
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没收
发表于 2025-3-27 23:54:52
Generation in Groups,dness in dealing with reduced words. The universal property that any group generated by a set of elements . is a homomorphic image of the free group on ., as well as the fact that a subgroup of a free group is free (possibly on many more generators) are easy consequences of this definition. The chap
宣称
发表于 2025-3-28 04:30:41
Elementary Properties of Rings,of the ring. Many examples of rings are presented—for example the monoid rings (which include group rings and polynomial rings of various kinds), matrix rings, quaternions, algebraic integers etc. This menagerie of rings provides a playground in which the student can explore the basic concepts (idea
在前面
发表于 2025-3-28 08:41:56
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tympanometry
发表于 2025-3-28 13:23:33
The Arithmetic of Integral Domains,d a field and is shipped off to Chap. .. For the domains . which remain, divisibility is a central question. A prime ideal has the property that elements outside the ideal are closed under multiplication. A non-zero element . is said to be . if the principle ideal . which it generates is a prime ide