let X be non empty countable set ; AOFA_I00:def 23 for T being Subset of (Funcs X,INT ) ex f being ExecutionFunction of FreeUnivAlgNSG ECIW-signature ,INT-ElemIns , Funcs X,INT ,T st f is Euclidean
let T be Subset of (Funcs X,INT ); ex f being ExecutionFunction of FreeUnivAlgNSG ECIW-signature ,INT-ElemIns , Funcs X,INT ,T st f is Euclidean
set A = FreeUnivAlgNSG ECIW-signature ,INT-ElemIns ;
consider c being Enumeration of X;
consider f being INT-Exec of c,T;
take
f
; f is Euclidean
thus
f is Euclidean
; verum