let X be set ; :: thesis: for q being FinSequence of BOOLEAN holds MergeSequence ((<*> (bool X)),q) = <*> (bool X)
let q be FinSequence of BOOLEAN ; :: thesis: MergeSequence ((<*> (bool X)),q) = <*> (bool X)
len (MergeSequence ((<*> (bool X)),q)) = len (<*> (bool X)) by Def1
.= 0 ;
hence MergeSequence ((<*> (bool X)),q) = <*> (bool X) ; :: thesis: verum