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Math 210B. Spec 1. Some classical motivation Let A be a
Math 210B. Spec 1. Some classical motivation Let A be a

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... Example 9: Determine if Z m is an abelian group under the addition operator. Solution: For a, b, c  Z m , we show it satisfies the 4 properties for a group. To do this, let the binary operation  m denote the addition modulo m (for example, a  m b can be thought of computationally as finding the i ...
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representable functors and operations on rings

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... Corollary 12. Each finitely generated abelian group is a direct sum of cyclic groups , each of prime power order or infinite. Proof. This quickly follows from the fact that Z is a PID. So in the particular case where R in Theorem 11 is Z, our Z-module is the same from Example 1, where scaler multipl ...
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contact email: donsen2 at hotmail.com Contemporary abstract

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Commutative ring

In ring theory, a branch of abstract algebra, a commutative ring is a ring in which the multiplication operation is commutative. The study of commutative rings is called commutative algebra.Some specific kinds of commutative rings are given with the following chain of class inclusions: Commutative rings ⊃ integral domains ⊃ integrally closed domains ⊃ unique factorization domains ⊃ principal ideal domains ⊃ Euclidean domains ⊃ fields ⊃ finite fields
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