let G be Group; :: thesis: for H2 being Subgroup of G
for H1 being strict Subgroup of G holds
( H1,H2 are_conjugated iff carr H1, carr H2 are_conjugated )
let H2 be Subgroup of G; :: thesis: for H1 being strict Subgroup of G holds
( H1,H2 are_conjugated iff carr H1, carr H2 are_conjugated )
let H1 be strict Subgroup of G; :: thesis: ( H1,H2 are_conjugated iff carr H1, carr H2 are_conjugated )
thus
( H1,H2 are_conjugated implies carr H1, carr H2 are_conjugated )
:: thesis: ( carr H1, carr H2 are_conjugated implies H1,H2 are_conjugated )
given a being Element of G such that A2:
carr H1 = (carr H2) |^ a
; :: according to GROUP_3:def 9 :: thesis: H1,H2 are_conjugated
H1 = H2 |^ a
by A2, Def6;
hence
H1,H2 are_conjugated
by Def11; :: thesis: verum