let E be set ; :: thesis: for A being Subset of (E ^omega )
for m, n being Nat st m <= n holds
(A ? ) |^ m,n = (A ? ) |^ 0 ,n
let A be Subset of (E ^omega ); :: thesis: for m, n being Nat st m <= n holds
(A ? ) |^ m,n = (A ? ) |^ 0 ,n
let m, n be Nat; :: thesis: ( m <= n implies (A ? ) |^ m,n = (A ? ) |^ 0 ,n )
assume A1: m <= n ; :: thesis: (A ? ) |^ m,n = (A ? ) |^ 0 ,n
<%> E in A ? by Th78;
hence (A ? ) |^ m,n = (A ? ) |^ 0 ,n by A1, Th72; :: thesis: verum