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目录
Chapter 1 NUMBERS AND SETS
1.1 Sets
1.2 Mappings ,Cardinality
1.3 The Number sequence
1.4 Finite and countable (denumerable)sets
1.5 partitions
Chapter 2 GROUPS
2.1 The concept of a group
2.2 subgrougs
2.3 compleses.cosets
2.4 Isomorphisms and automorphisms
2.5 Homomorphisms ,normal subgroups,and factor groups
Chapter 3 RINGS AND FIELDS
3.1 Rings
3.2 Homomorphism and Isomorphism
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