take
b
; ex c being Element of SCM+FSA-Data-Loc ex f being Element of SCM+FSA-Data*-Loc ex b being Element of SCM+FSA-Data-Loc st
( <*c,f,b*> = x `2 & b = b )
take
c
; ex f being Element of SCM+FSA-Data*-Loc ex b being Element of SCM+FSA-Data-Loc st
( <*c,f,b*> = x `2 & b = b )
take
f
; ex b being Element of SCM+FSA-Data-Loc st
( <*c,f,b*> = x `2 & b = b )
take
b
; ( <*c,f,b*> = x `2 & b = b )
thus
( <*c,f,b*> = x `2 & b = b )
by A1, MCART_1:7; verum