let X be non empty TopSpace; for x being Point of X
for Y being monotone-convergence T_0-TopSpace ex F being directed-sups-preserving projection Function of (oContMaps (X,Y)),(oContMaps (X,Y)) st
( ( for f being continuous Function of X,Y holds F . f = X --> (f . x) ) & ex h being continuous Function of X,X st
( h = X --> x & F = oContMaps (h,Y) ) )
let x be Point of X; for Y being monotone-convergence T_0-TopSpace ex F being directed-sups-preserving projection Function of (oContMaps (X,Y)),(oContMaps (X,Y)) st
( ( for f being continuous Function of X,Y holds F . f = X --> (f . x) ) & ex h being continuous Function of X,X st
( h = X --> x & F = oContMaps (h,Y) ) )
let Y be monotone-convergence T_0-TopSpace; ex F being directed-sups-preserving projection Function of (oContMaps (X,Y)),(oContMaps (X,Y)) st
( ( for f being continuous Function of X,Y holds F . f = X --> (f . x) ) & ex h being continuous Function of X,X st
( h = X --> x & F = oContMaps (h,Y) ) )
set XY = oContMaps (X,Y);
reconsider f = X --> x as continuous Function of X,X ;
set F = oContMaps (f,Y);
dom f = the carrier of X
by FUNCT_2:def 1;
then f * f =
the carrier of X --> (f . x)
by FUNCOP_1:17
.=
f
by FUNCOP_1:7
;
then
f is idempotent
by QUANTAL1:def 9;
then
oContMaps (f,Y) is idempotent directed-sups-preserving Function of (oContMaps (X,Y)),(oContMaps (X,Y))
by Th11, Th15;
then reconsider F = oContMaps (f,Y) as directed-sups-preserving projection Function of (oContMaps (X,Y)),(oContMaps (X,Y)) by WAYBEL_1:def 13;
take
F
; ( ( for f being continuous Function of X,Y holds F . f = X --> (f . x) ) & ex h being continuous Function of X,X st
( h = X --> x & F = oContMaps (h,Y) ) )
thus
ex h being continuous Function of X,X st
( h = X --> x & F = oContMaps (h,Y) )
; verum