Theorem limccl 15327

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 15324	. . . . . 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 6200	. . . . 5 |- ( w e. ( F lim CC B ) -> F e. ( CC ^pm CC ) )
4		limcrcl 15326	. . . . . 6 |- ( w e. ( F lim CC B ) -> ( F : dom F --> CC /\ dom F C_ CC /\ B e. CC ) )
5	4	simp3d 1035	. . . . 5 |- ( w e. ( F lim CC B ) -> B e. CC )
6		cnex 8119	. . . . . . 7 |- CC e. _V
7	6	rabex 4227	. . . . . 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 4924	. . . . . . . . . 10 |- ( ( f = F /\ x = B ) -> dom f = dom F )
11	9, 10	feq12d 5462	. . . . . . . . 9 |- ( ( f = F /\ x = B ) -> ( f : dom f --> CC <-> F : dom F --> CC ) )
12	10	sseq1d 3253	. . . . . . . . 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 2298	. . . . . . . . 9 |- ( ( f = F /\ x = B ) -> ( x e. CC <-> B e. CC ) )
16	14	breq2d 4094	. . . . . . . . . . . . . 14 |- ( ( f = F /\ x = B ) -> ( z # x <-> z # B ) )
17	14	oveq2d 6016	. . . . . . . . . . . . . . . 16 |- ( ( f = F /\ x = B ) -> ( z - x ) = ( z - B ) )
18	17	fveq2d 5630	. . . . . . . . . . . . . . 15 |- ( ( f = F /\ x = B ) -> ( abs ` ( z - x ) ) = ( abs ` ( z - B ) ) )
19	18	breq1d 4092	. . . . . . . . . . . . . 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 5628	. . . . . . . . . . . . . . 15 |- ( ( f = F /\ x = B ) -> ( f ` z ) = ( F ` z ) )
22	21	fvoveq1d 6022	. . . . . . . . . . . . . 14 |- ( ( f = F /\ x = B ) -> ( abs ` ( ( f ` z ) - y ) ) = ( abs ` ( ( F ` z ) - y ) ) )
23	22	breq1d 4092	. . . . . . . . . . . . 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 2744	. . . . . . . . . . 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 2531	. . . . . . . . . 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 2530	. . . . . . . . 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 2788	. . . . . 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 6133	. . . . 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 1271	. . . 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 2308	. . 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 2956	. . 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 3228	1 |- ( F lim CC B ) C_ CC

Syntax hints:   -> wi 4   /\ wa 104   = wceq 1395   e. wcel 2200   A.wral 2508   E.wrex 2509   {crab 2512   _Vcvv 2799   C_ wss 3197   class class class wbr 4082   dom cdm 4718   -->wf 5313   ` cfv 5317  (class class class)co 6000   ^pm cpm 6794   CCcc 7993   < clt 8177   - cmin 8313   # cap 8724   RR+crp 9845   abscabs 11503   lim CC climc 15322

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 617  ax-in2 618  ax-io 714  ax-5 1493  ax-7 1494  ax-gen 1495  ax-ie1 1539  ax-ie2 1540  ax-8 1550  ax-10 1551  ax-11 1552  ax-i12 1553  ax-bndl 1555  ax-4 1556  ax-17 1572  ax-i9 1576  ax-ial 1580  ax-i5r 1581  ax-13 2202  ax-14 2203  ax-ext 2211  ax-sep 4201  ax-pow 4257  ax-pr 4292  ax-un 4523  ax-setind 4628  ax-cnex 8086

This theorem depends on definitions:  df-bi 117  df-3an 1004  df-tru 1398  df-fal 1401  df-nf 1507  df-sb 1809  df-eu 2080  df-mo 2081  df-clab 2216  df-cleq 2222  df-clel 2225  df-nfc 2361  df-ne 2401  df-ral 2513  df-rex 2514  df-rab 2517  df-v 2801  df-sbc 3029  df-dif 3199  df-un 3201  df-in 3203  df-ss 3210  df-pw 3651  df-sn 3672  df-pr 3673  df-op 3675  df-uni 3888  df-br 4083  df-opab 4145  df-id 4383  df-xp 4724  df-rel 4725  df-cnv 4726  df-co 4727  df-dm 4728  df-rn 4729  df-iota 5277  df-fun 5319  df-fn 5320  df-f 5321  df-fv 5325  df-ov 6003  df-oprab 6004  df-mpo 6005  df-pm 6796  df-limced 15324

This theorem is referenced by:  reldvg  15347  dvfvalap  15349  dvcl  15351