let S be non empty compact TopSpace; for T being NormedLinearTopSpace
for F being Point of (R_NormSpace_of_ContinuousFunctions (S,T)) st F = 0. (R_NormSpace_of_ContinuousFunctions (S,T)) holds
0 = ||.F.||
let T be NormedLinearTopSpace; for F being Point of (R_NormSpace_of_ContinuousFunctions (S,T)) st F = 0. (R_NormSpace_of_ContinuousFunctions (S,T)) holds
0 = ||.F.||
let F be Point of (R_NormSpace_of_ContinuousFunctions (S,T)); ( F = 0. (R_NormSpace_of_ContinuousFunctions (S,T)) implies 0 = ||.F.|| )
assume A1:
F = 0. (R_NormSpace_of_ContinuousFunctions (S,T))
; 0 = ||.F.||
reconsider F1 = F as Point of (R_NormSpace_of_BoundedFunctions ( the carrier of S,T)) by Th34;
A2:
||.F.|| = ||.F1.||
by FUNCT_1:49;
F = the carrier of S --> (0. T)
by A1, Th40;
then
F1 = 0. (R_NormSpace_of_BoundedFunctions ( the carrier of S,T))
by RSSPACE4:15;
hence
0 = ||.F.||
by A2; verum