Theorem limccl 15650

Description: Closure of the limit operator. (Contributed by Mario Carneiro, 25-Dec-2016.)

Assertion

Ref	Expression
limccl	|- ( F lim CC B ) C_ CC

Proof of Theorem limccl

Dummy variables d e f x y z w are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		id 19	. . . 4 |- ( w e. ( F lim CC B ) -> w e. ( F lim CC B ) )
2		df-limced 15647	. . . . . 6 |- lim CC = ( f e. ( CC ^pm CC ) , x e. CC |-> { y e. CC | ( ( f : dom f --> CC /\ dom f C_ CC ) /\ ( x e. CC /\ A. e e. RR+ E. d e. RR+ A. z e. dom f ( ( z # x /\ ( abs ` ( z - x ) ) < d ) -> ( abs ` ( ( f ` z ) - y ) ) < e ) ) ) } )
3	2	elmpocl1 6258	. . . . 5 |- ( w e. ( F lim CC B ) -> F e. ( CC ^pm CC ) )
4		limcrcl 15649	. . . . . 6 |- ( w e. ( F lim CC B ) -> ( F : dom F --> CC /\ dom F C_ CC /\ B e. CC ) )
5	4	simp3d 1038	. . . . 5 |- ( w e. ( F lim CC B ) -> B e. CC )
6		cnex 8267	. . . . . . 7 |- CC e. _V
7	6	rabex 4261	. . . . . 6 |- { y e. CC | ( ( F : dom F --> CC /\ dom F C_ CC ) /\ ( B e. CC /\ A. e e. RR+ E. d e. RR+ A. z e. dom F ( ( z # B /\ ( abs ` ( z - B ) ) < d ) -> ( abs ` ( ( F ` z ) - y ) ) < e ) ) ) } e. _V
8	7	a1i 9	. . . . 5 |- ( w e. ( F lim CC B ) -> { y e. CC | ( ( F : dom F --> CC /\ dom F C_ CC ) /\ ( B e. CC /\ A. e e. RR+ E. d e. RR+ A. z e. dom F ( ( z # B /\ ( abs ` ( z - B ) ) < d ) -> ( abs ` ( ( F ` z ) - y ) ) < e ) ) ) } e. _V )
9		simpl 109	. . . . . . . . . 10 |- ( ( f = F /\ x = B ) -> f = F )
10	9	dmeqd 4963	. . . . . . . . . 10 |- ( ( f = F /\ x = B ) -> dom f = dom F )
11	9, 10	feq12d 5503	. . . . . . . . 9 |- ( ( f = F /\ x = B ) -> ( f : dom f --> CC <-> F : dom F --> CC ) )
12	10	sseq1d 3271	. . . . . . . . 9 |- ( ( f = F /\ x = B ) -> ( dom f C_ CC <-> dom F C_ CC ) )
13	11, 12	anbi12d 473	. . . . . . . 8 |- ( ( f = F /\ x = B ) -> ( ( f : dom f --> CC /\ dom f C_ CC ) <-> ( F : dom F --> CC /\ dom F C_ CC ) ) )
14		simpr 110	. . . . . . . . . 10 |- ( ( f = F /\ x = B ) -> x = B )
15	14	eleq1d 2303	. . . . . . . . 9 |- ( ( f = F /\ x = B ) -> ( x e. CC <-> B e. CC ) )
16	14	breq2d 4126	. . . . . . . . . . . . . 14 |- ( ( f = F /\ x = B ) -> ( z # x <-> z # B ) )
17	14	oveq2d 6074	. . . . . . . . . . . . . . . 16 |- ( ( f = F /\ x = B ) -> ( z - x ) = ( z - B ) )
18	17	fveq2d 5679	. . . . . . . . . . . . . . 15 |- ( ( f = F /\ x = B ) -> ( abs ` ( z - x ) ) = ( abs ` ( z - B ) ) )
19	18	breq1d 4124	. . . . . . . . . . . . . 14 |- ( ( f = F /\ x = B ) -> ( ( abs ` ( z - x ) ) < d <-> ( abs ` ( z - B ) ) < d ) )
20	16, 19	anbi12d 473	. . . . . . . . . . . . 13 |- ( ( f = F /\ x = B ) -> ( ( z # x /\ ( abs ` ( z - x ) ) < d ) <-> ( z # B /\ ( abs ` ( z - B ) ) < d ) ) )
21	9	fveq1d 5677	. . . . . . . . . . . . . . 15 |- ( ( f = F /\ x = B ) -> ( f ` z ) = ( F ` z ) )
22	21	fvoveq1d 6080	. . . . . . . . . . . . . 14 |- ( ( f = F /\ x = B ) -> ( abs ` ( ( f ` z ) - y ) ) = ( abs ` ( ( F ` z ) - y ) ) )
23	22	breq1d 4124	. . . . . . . . . . . . 13 |- ( ( f = F /\ x = B ) -> ( ( abs ` ( ( f ` z ) - y ) ) < e <-> ( abs ` ( ( F ` z ) - y ) ) < e ) )
24	20, 23	imbi12d 234	. . . . . . . . . . . 12 |- ( ( f = F /\ x = B ) -> ( ( ( z # x /\ ( abs ` ( z - x ) ) < d ) -> ( abs ` ( ( f ` z ) - y ) ) < e ) <-> ( ( z # B /\ ( abs ` ( z - B ) ) < d ) -> ( abs ` ( ( F ` z ) - y ) ) < e ) ) )
25	10, 24	raleqbidv 2759	. . . . . . . . . . 11 |- ( ( f = F /\ x = B ) -> ( A. z e. dom f ( ( z # x /\ ( abs ` ( z - x ) ) < d ) -> ( abs ` ( ( f ` z ) - y ) ) < e ) <-> A. z e. dom F ( ( z # B /\ ( abs ` ( z - B ) ) < d ) -> ( abs ` ( ( F ` z ) - y ) ) < e ) ) )
26	25	rexbidv 2545	. . . . . . . . . 10 |- ( ( f = F /\ x = B ) -> ( E. d e. RR+ A. z e. dom f ( ( z # x /\ ( abs ` ( z - x ) ) < d ) -> ( abs ` ( ( f ` z ) - y ) ) < e ) <-> E. d e. RR+ A. z e. dom F ( ( z # B /\ ( abs ` ( z - B ) ) < d ) -> ( abs ` ( ( F ` z ) - y ) ) < e ) ) )
27	26	ralbidv 2544	. . . . . . . . 9 |- ( ( f = F /\ x = B ) -> ( A. e e. RR+ E. d e. RR+ A. z e. dom f ( ( z # x /\ ( abs ` ( z - x ) ) < d ) -> ( abs ` ( ( f ` z ) - y ) ) < e ) <-> A. e e. RR+ E. d e. RR+ A. z e. dom F ( ( z # B /\ ( abs ` ( z - B ) ) < d ) -> ( abs ` ( ( F ` z ) - y ) ) < e ) ) )
28	15, 27	anbi12d 473	. . . . . . . 8 |- ( ( f = F /\ x = B ) -> ( ( x e. CC /\ A. e e. RR+ E. d e. RR+ A. z e. dom f ( ( z # x /\ ( abs ` ( z - x ) ) < d ) -> ( abs ` ( ( f ` z ) - y ) ) < e ) ) <-> ( B e. CC /\ A. e e. RR+ E. d e. RR+ A. z e. dom F ( ( z # B /\ ( abs ` ( z - B ) ) < d ) -> ( abs ` ( ( F ` z ) - y ) ) < e ) ) ) )
29	13, 28	anbi12d 473	. . . . . . 7 |- ( ( f = F /\ x = B ) -> ( ( ( f : dom f --> CC /\ dom f C_ CC ) /\ ( x e. CC /\ A. e e. RR+ E. d e. RR+ A. z e. dom f ( ( z # x /\ ( abs ` ( z - x ) ) < d ) -> ( abs ` ( ( f ` z ) - y ) ) < e ) ) ) <-> ( ( F : dom F --> CC /\ dom F C_ CC ) /\ ( B e. CC /\ A. e e. RR+ E. d e. RR+ A. z e. dom F ( ( z # B /\ ( abs ` ( z - B ) ) < d ) -> ( abs ` ( ( F ` z ) - y ) ) < e ) ) ) ) )
30	29	rabbidv 2804	. . . . . 6 |- ( ( f = F /\ x = B ) -> { y e. CC | ( ( f : dom f --> CC /\ dom f C_ CC ) /\ ( x e. CC /\ A. e e. RR+ E. d e. RR+ A. z e. dom f ( ( z # x /\ ( abs ` ( z - x ) ) < d ) -> ( abs ` ( ( f ` z ) - y ) ) < e ) ) ) } = { y e. CC | ( ( F : dom F --> CC /\ dom F C_ CC ) /\ ( B e. CC /\ A. e e. RR+ E. d e. RR+ A. z e. dom F ( ( z # B /\ ( abs ` ( z - B ) ) < d ) -> ( abs ` ( ( F ` z ) - y ) ) < e ) ) ) } )
31	30, 2	ovmpoga 6191	. . . . 5 |- ( ( F e. ( CC ^pm CC ) /\ B e. CC /\ { y e. CC | ( ( F : dom F --> CC /\ dom F C_ CC ) /\ ( B e. CC /\ A. e e. RR+ E. d e. RR+ A. z e. dom F ( ( z # B /\ ( abs ` ( z - B ) ) < d ) -> ( abs ` ( ( F ` z ) - y ) ) < e ) ) ) } e. _V ) -> ( F lim CC B ) = { y e. CC | ( ( F : dom F --> CC /\ dom F C_ CC ) /\ ( B e. CC /\ A. e e. RR+ E. d e. RR+ A. z e. dom F ( ( z # B /\ ( abs ` ( z - B ) ) < d ) -> ( abs ` ( ( F ` z ) - y ) ) < e ) ) ) } )
32	3, 5, 8, 31	syl3anc 1274	. . . 4 |- ( w e. ( F lim CC B ) -> ( F lim CC B ) = { y e. CC | ( ( F : dom F --> CC /\ dom F C_ CC ) /\ ( B e. CC /\ A. e e. RR+ E. d e. RR+ A. z e. dom F ( ( z # B /\ ( abs ` ( z - B ) ) < d ) -> ( abs ` ( ( F ` z ) - y ) ) < e ) ) ) } )
33	1, 32	eleqtrd 2313	. . 3 |- ( w e. ( F lim CC B ) -> w e. { y e. CC | ( ( F : dom F --> CC /\ dom F C_ CC ) /\ ( B e. CC /\ A. e e. RR+ E. d e. RR+ A. z e. dom F ( ( z # B /\ ( abs ` ( z - B ) ) < d ) -> ( abs ` ( ( F ` z ) - y ) ) < e ) ) ) } )
34		elrabi 2973	. . 3 |- ( w e. { y e. CC | ( ( F : dom F --> CC /\ dom F C_ CC ) /\ ( B e. CC /\ A. e e. RR+ E. d e. RR+ A. z e. dom F ( ( z # B /\ ( abs ` ( z - B ) ) < d ) -> ( abs ` ( ( F ` z ) - y ) ) < e ) ) ) } -> w e. CC )
35	33, 34	syl 14	. 2 |- ( w e. ( F lim CC B ) -> w e. CC )
36	35	ssriv 3246	1 |- ( F lim CC B ) C_ CC

Syntax hints:   -> wi 4   /\ wa 104   = wceq 1398   e. wcel 2205   A.wral 2522   E.wrex 2523   {crab 2526   _Vcvv 2815   C_ wss 3214   class class class wbr 4114   dom cdm 4754   -->wf 5353   ` cfv 5357  (class class class)co 6058   ^pm cpm 6896   CCcc 8141   < clt 8324   - cmin 8460   # cap 8872   RR+crp 10004   abscabs 11707   lim CC climc 15645

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 619  ax-in2 620  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2207  ax-14 2208  ax-ext 2216  ax-sep 4233  ax-pow 4292  ax-pr 4327  ax-un 4559  ax-setind 4664  ax-cnex 8234

This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1812  df-eu 2085  df-mo 2086  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ne 2415  df-ral 2527  df-rex 2528  df-rab 2531  df-v 2817  df-sbc 3046  df-dif 3216  df-un 3218  df-in 3220  df-ss 3227  df-pw 3676  df-sn 3700  df-pr 3701  df-op 3703  df-uni 3920  df-br 4115  df-opab 4177  df-id 4419  df-xp 4760  df-rel 4761  df-cnv 4762  df-co 4763  df-dm 4764  df-rn 4765  df-iota 5317  df-fun 5359  df-fn 5360  df-f 5361  df-fv 5365  df-ov 6061  df-oprab 6062  df-mpo 6063  df-pm 6898  df-limced 15647

This theorem is referenced by:  reldvg  15670  dvfvalap  15672  dvcl  15674