let n, m be non zero Element of NAT ; for R1 being RestFunc of (REAL-NS n) st R1 /. 0 = 0. (REAL-NS n) holds
for R2 being RestFunc of (REAL-NS n),(REAL-NS m) st R2 /. (0. (REAL-NS n)) = 0. (REAL-NS m) holds
for L1 being LinearFunc of (REAL-NS n)
for L2 being Lipschitzian LinearOperator of (REAL-NS n),(REAL-NS m) holds (L2 * R1) + (R2 * (L1 + R1)) is RestFunc of (REAL-NS m)
let R1 be RestFunc of (REAL-NS n); ( R1 /. 0 = 0. (REAL-NS n) implies for R2 being RestFunc of (REAL-NS n),(REAL-NS m) st R2 /. (0. (REAL-NS n)) = 0. (REAL-NS m) holds
for L1 being LinearFunc of (REAL-NS n)
for L2 being Lipschitzian LinearOperator of (REAL-NS n),(REAL-NS m) holds (L2 * R1) + (R2 * (L1 + R1)) is RestFunc of (REAL-NS m) )
assume A1:
R1 /. 0 = 0. (REAL-NS n)
; for R2 being RestFunc of (REAL-NS n),(REAL-NS m) st R2 /. (0. (REAL-NS n)) = 0. (REAL-NS m) holds
for L1 being LinearFunc of (REAL-NS n)
for L2 being Lipschitzian LinearOperator of (REAL-NS n),(REAL-NS m) holds (L2 * R1) + (R2 * (L1 + R1)) is RestFunc of (REAL-NS m)
let R2 be RestFunc of (REAL-NS n),(REAL-NS m); ( R2 /. (0. (REAL-NS n)) = 0. (REAL-NS m) implies for L1 being LinearFunc of (REAL-NS n)
for L2 being Lipschitzian LinearOperator of (REAL-NS n),(REAL-NS m) holds (L2 * R1) + (R2 * (L1 + R1)) is RestFunc of (REAL-NS m) )
assume A2:
R2 /. (0. (REAL-NS n)) = 0. (REAL-NS m)
; for L1 being LinearFunc of (REAL-NS n)
for L2 being Lipschitzian LinearOperator of (REAL-NS n),(REAL-NS m) holds (L2 * R1) + (R2 * (L1 + R1)) is RestFunc of (REAL-NS m)
let L1 be LinearFunc of (REAL-NS n); for L2 being Lipschitzian LinearOperator of (REAL-NS n),(REAL-NS m) holds (L2 * R1) + (R2 * (L1 + R1)) is RestFunc of (REAL-NS m)
let L2 be Lipschitzian LinearOperator of (REAL-NS n),(REAL-NS m); (L2 * R1) + (R2 * (L1 + R1)) is RestFunc of (REAL-NS m)
A3:
L2 * R1 is RestFunc of (REAL-NS m)
by Th47;
R2 * (L1 + R1) is RestFunc of (REAL-NS m)
by A1, A2, Th48;
hence
(L2 * R1) + (R2 * (L1 + R1)) is RestFunc of (REAL-NS m)
by A3, NDIFF_3:7; verum