take mk ; :: thesis: ex f being FinSequence of SCM-Data-Loc st
( f = x `3_3 & mk = f /. 1 )
take <*mk,ml*> ; :: thesis: ( <*mk,ml*> = x `3_3 & mk = <*mk,ml*> /. 1 )
thus ( <*mk,ml*> = x `3_3 & mk = <*mk,ml*> /. 1 ) by A1, FINSEQ_4:17; :: thesis: verum