let Al be QC-alphabet ; :: thesis: for X being Subset of (CQC-WFF Al) holds X |- VERUM Al
let X be Subset of (CQC-WFF Al); :: thesis: X |- VERUM Al
set f = <*> (CQC-WFF Al);
A1: rng (<*> (CQC-WFF Al)) c= X ;
|- (<*> (CQC-WFF Al)) ^ <*(VERUM Al)*> by HENMODEL:15;
hence X |- VERUM Al by A1, HENMODEL:def 1; :: thesis: verum