let G1, G2 be non empty Group-like multMagma ; :: thesis: <*G1,G2*> is Group-like multMagma-Family of {1,2}
reconsider A = <*G1,G2*> as multMagma-Family of {1,2} ;
A is Group-like

proof

let x be Element of {1,2}; :: according to GROUP_7:def 6 :: thesis: A . x is Group-like
( x = 1 or x = 2 ) by TARSKI:def 2;
hence A . x is Group-like ; :: thesis: verum

end;

hence <*G1,G2*> is Group-like multMagma-Family of {1,2} ; :: thesis: verum