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keneth r rosen discrete mathematics

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iarnav asked May 10, 2017
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keneth r rosen discrete mathematics
IF H be a subgroup of a group G then how to prove that the relation R= {(x,y): x,y belong to G, x-1ybelongs to H} is an equivalence relation. Please help as soon as possible.
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iarnav asked May 10, 2017
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In a group G, how to prove that (a.b)-1 = b-1. a-1 for all a,b belongs to G.
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iarnav asked May 10, 2017
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keneth r rosen discrete mathematics
the relation R is partial order on the set Z where, R is defined as, a R b iff a=2b. how to prove it.
the relation R is partial order on the set Z where, R is defined as, a R b iff a=2b.how to prove it.
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iarnav asked May 7, 2017
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keneth r rosen
HOW TO SOLVE THIS USING BOOLEAN ALGEBRA;
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