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Definitions of Equivalence & Groups

(1) State the definition of equivalence relation....

and

(2) Give one example of an abelian group and two (2) examples of nonabelian groups

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(1) An equivalence relation is a type of relationship between elements of a set. An equivalence relationship has three conditions that must be true (by the way, this is often symbolized by the equals sign, =, and when I use the words "is equal to", this is short for "has the ...

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