let n be Nat; for m being Nat of n
for RAS being ReperAlgebra of n
for a being Point of RAS
for p being Tuple of (n + 1),RAS
for W being ATLAS of RAS
for x being Tuple of (n + 1),W st (a,x) . W = p & m <= n holds
(a,(x +* ((m + 1),(x . m)))) . W = p +* ((m + 1),(p . m))
let m be Nat of n; for RAS being ReperAlgebra of n
for a being Point of RAS
for p being Tuple of (n + 1),RAS
for W being ATLAS of RAS
for x being Tuple of (n + 1),W st (a,x) . W = p & m <= n holds
(a,(x +* ((m + 1),(x . m)))) . W = p +* ((m + 1),(p . m))
let RAS be ReperAlgebra of n; for a being Point of RAS
for p being Tuple of (n + 1),RAS
for W being ATLAS of RAS
for x being Tuple of (n + 1),W st (a,x) . W = p & m <= n holds
(a,(x +* ((m + 1),(x . m)))) . W = p +* ((m + 1),(p . m))
let a be Point of RAS; for p being Tuple of (n + 1),RAS
for W being ATLAS of RAS
for x being Tuple of (n + 1),W st (a,x) . W = p & m <= n holds
(a,(x +* ((m + 1),(x . m)))) . W = p +* ((m + 1),(p . m))
let p be Tuple of (n + 1),RAS; for W being ATLAS of RAS
for x being Tuple of (n + 1),W st (a,x) . W = p & m <= n holds
(a,(x +* ((m + 1),(x . m)))) . W = p +* ((m + 1),(p . m))
let W be ATLAS of RAS; for x being Tuple of (n + 1),W st (a,x) . W = p & m <= n holds
(a,(x +* ((m + 1),(x . m)))) . W = p +* ((m + 1),(p . m))
let x be Tuple of (n + 1),W; ( (a,x) . W = p & m <= n implies (a,(x +* ((m + 1),(x . m)))) . W = p +* ((m + 1),(p . m)) )
assume that
A1:
(a,x) . W = p
and
A2:
m <= n
; (a,(x +* ((m + 1),(x . m)))) . W = p +* ((m + 1),(p . m))
W . (a,p) = x
by A1, Th15;
then
W . (a,(p +* ((m + 1),(p . m)))) = x +* ((m + 1),(x . m))
by A2, Th31;
hence
(a,(x +* ((m + 1),(x . m)))) . W = p +* ((m + 1),(p . m))
by Th15; verum