let LL be non empty RelStr ; ex T being correct strict TopAugmentation of LL st T is lower
set A = { ((uparrow x) ` ) where x is Element of LL : verum } ;
{ ((uparrow x) ` ) where x is Element of LL : verum } c= bool the carrier of LL
then reconsider A = { ((uparrow x) ` ) where x is Element of LL : verum } as Subset-Family of LL ;
set T = TopRelStr(# the carrier of LL,the InternalRel of LL,(UniCl (FinMeetCl A)) #);
reconsider S = TopStruct(# the carrier of LL,(UniCl (FinMeetCl A)) #) as non empty TopSpace by CANTOR_1:17;
A1:
TopStruct(# the carrier of TopRelStr(# the carrier of LL,the InternalRel of LL,(UniCl (FinMeetCl A)) #),the topology of TopRelStr(# the carrier of LL,the InternalRel of LL,(UniCl (FinMeetCl A)) #) #) = S
;
TopRelStr(# the carrier of LL,the InternalRel of LL,(UniCl (FinMeetCl A)) #) is TopSpace-like
proof
thus
the
carrier of
TopRelStr(# the
carrier of
LL,the
InternalRel of
LL,
(UniCl (FinMeetCl A)) #)
in the
topology of
TopRelStr(# the
carrier of
LL,the
InternalRel of
LL,
(UniCl (FinMeetCl A)) #)
by A1, PRE_TOPC:def 1;
PRE_TOPC:def 1 ( ( for b1 being Element of bool (bool the carrier of TopRelStr(# the carrier of LL,the InternalRel of LL,(UniCl (FinMeetCl A)) #)) holds
( not b1 c= the topology of TopRelStr(# the carrier of LL,the InternalRel of LL,(UniCl (FinMeetCl A)) #) or union b1 in the topology of TopRelStr(# the carrier of LL,the InternalRel of LL,(UniCl (FinMeetCl A)) #) ) ) & ( for b1, b2 being Element of bool the carrier of TopRelStr(# the carrier of LL,the InternalRel of LL,(UniCl (FinMeetCl A)) #) holds
( not b1 in the topology of TopRelStr(# the carrier of LL,the InternalRel of LL,(UniCl (FinMeetCl A)) #) or not b2 in the topology of TopRelStr(# the carrier of LL,the InternalRel of LL,(UniCl (FinMeetCl A)) #) or b1 /\ b2 in the topology of TopRelStr(# the carrier of LL,the InternalRel of LL,(UniCl (FinMeetCl A)) #) ) ) )
hereby for b1, b2 being Element of bool the carrier of TopRelStr(# the carrier of LL,the InternalRel of LL,(UniCl (FinMeetCl A)) #) holds
( not b1 in the topology of TopRelStr(# the carrier of LL,the InternalRel of LL,(UniCl (FinMeetCl A)) #) or not b2 in the topology of TopRelStr(# the carrier of LL,the InternalRel of LL,(UniCl (FinMeetCl A)) #) or b1 /\ b2 in the topology of TopRelStr(# the carrier of LL,the InternalRel of LL,(UniCl (FinMeetCl A)) #) )
let a be
Subset-Family of
TopRelStr(# the
carrier of
LL,the
InternalRel of
LL,
(UniCl (FinMeetCl A)) #);
( a c= the topology of TopRelStr(# the carrier of LL,the InternalRel of LL,(UniCl (FinMeetCl A)) #) implies union a in the topology of TopRelStr(# the carrier of LL,the InternalRel of LL,(UniCl (FinMeetCl A)) #) )reconsider b =
a as
Subset-Family of
S ;
assume
a c= the
topology of
TopRelStr(# the
carrier of
LL,the
InternalRel of
LL,
(UniCl (FinMeetCl A)) #)
;
union a in the topology of TopRelStr(# the carrier of LL,the InternalRel of LL,(UniCl (FinMeetCl A)) #)then
union b in the
topology of
S
by PRE_TOPC:def 1;
hence
union a in the
topology of
TopRelStr(# the
carrier of
LL,the
InternalRel of
LL,
(UniCl (FinMeetCl A)) #)
;
verum
end;
let a,
b be
Subset of
TopRelStr(# the
carrier of
LL,the
InternalRel of
LL,
(UniCl (FinMeetCl A)) #);
( not a in the topology of TopRelStr(# the carrier of LL,the InternalRel of LL,(UniCl (FinMeetCl A)) #) or not b in the topology of TopRelStr(# the carrier of LL,the InternalRel of LL,(UniCl (FinMeetCl A)) #) or a /\ b in the topology of TopRelStr(# the carrier of LL,the InternalRel of LL,(UniCl (FinMeetCl A)) #) )
assume that A2:
a in the
topology of
TopRelStr(# the
carrier of
LL,the
InternalRel of
LL,
(UniCl (FinMeetCl A)) #)
and A3:
b in the
topology of
TopRelStr(# the
carrier of
LL,the
InternalRel of
LL,
(UniCl (FinMeetCl A)) #)
;
a /\ b in the topology of TopRelStr(# the carrier of LL,the InternalRel of LL,(UniCl (FinMeetCl A)) #)
a /\ b in the
topology of
S
by A2, A3, PRE_TOPC:def 1;
hence
a /\ b in the
topology of
TopRelStr(# the
carrier of
LL,the
InternalRel of
LL,
(UniCl (FinMeetCl A)) #)
;
verum
end;
then reconsider T = TopRelStr(# the carrier of LL,the InternalRel of LL,(UniCl (FinMeetCl A)) #) as non empty TopSpace-like strict TopRelStr ;
take
T
; ( T is correct strict TopAugmentation of LL & T is lower )
set BB = { ((uparrow x) ` ) where x is Element of T : verum } ;
RelStr(# the carrier of T,the InternalRel of T #) = RelStr(# the carrier of LL,the InternalRel of LL #)
;
hence
T is correct strict TopAugmentation of LL
by YELLOW_9:def 4; T is lower
A4:
A is prebasis of S
by CANTOR_1:20;
then consider F being Basis of S such that
A5:
F c= FinMeetCl A
by CANTOR_1:def 5;
A6:
the topology of T c= UniCl F
by CANTOR_1:def 2;
F c= the topology of T
by TOPS_2:78;
then A7:
F is Basis of T
by A6, CANTOR_1:def 2, TOPS_2:78;
RelStr(# the carrier of T,the InternalRel of T #) = RelStr(# the carrier of LL,the InternalRel of LL #)
;
then A8:
A = { ((uparrow x) ` ) where x is Element of T : verum }
by Lm1;
A c= the topology of S
by A4, TOPS_2:78;
hence
{ ((uparrow x) ` ) where x is Element of T : verum } is prebasis of T
by A7, A5, A8, CANTOR_1:def 5, TOPS_2:78; WAYBEL19:def 1 verum