let a be real number ; :: thesis: for p, q being Rational st a > 1 & p > q holds
a #Q p > a #Q q
let p, q be Rational; :: thesis: ( a > 1 & p > q implies a #Q p > a #Q q )
assume A1:
( a > 1 & p > q )
; :: thesis: a #Q p > a #Q q
then A2:
p - q > 0
by XREAL_1:52;
A3:
a #Q q > 0
by A1, Th63;
A4:
a #Q q <> 0
by A1, Th63;
(a #Q p) / (a #Q q) = a #Q (p - q)
by A1, Th66;
then
((a #Q p) / (a #Q q)) * (a #Q q) > 1 * (a #Q q)
by A1, A2, A3, Th73, XREAL_1:70;
hence
a #Q p > a #Q q
by A4, XCMPLX_1:88; :: thesis: verum