0 votes 0 votes 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. Mathematical Logic group-theory + – iarnav asked May 10, 2017 iarnav 385 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.