Theorem limcrcl 15332

Description: Reverse closure for the limit operator. (Contributed by Mario Carneiro, 28-Dec-2016.)

Assertion

Ref	Expression
limcrcl	|- ( C e. ( F lim CC B ) -> ( F : dom F --> CC /\ dom F C_ CC /\ B e. CC ) )

Proof of Theorem limcrcl

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

Step	Hyp	Ref	Expression
1		df-limced 15330	. . 3 |- 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 ) ) ) } )
2	1	elmpocl 6200	. 2 |- ( C e. ( F lim CC B ) -> ( F e. ( CC ^pm CC ) /\ B e. CC ) )
3		cnex 8123	. . . . 5 |- CC e. _V
4	3, 3	elpm2 6827	. . . 4 |- ( F e. ( CC ^pm CC ) <-> ( F : dom F --> CC /\ dom F C_ CC ) )
5	4	anbi1i 458	. . 3 |- ( ( F e. ( CC ^pm CC ) /\ B e. CC ) <-> ( ( F : dom F --> CC /\ dom F C_ CC ) /\ B e. CC ) )
6		df-3an 1004	. . 3 |- ( ( F : dom F --> CC /\ dom F C_ CC /\ B e. CC ) <-> ( ( F : dom F --> CC /\ dom F C_ CC ) /\ B e. CC ) )
7	5, 6	bitr4i 187	. 2 |- ( ( F e. ( CC ^pm CC ) /\ B e. CC ) <-> ( F : dom F --> CC /\ dom F C_ CC /\ B e. CC ) )
8	2, 7	sylib 122	1 |- ( C e. ( F lim CC B ) -> ( F : dom F --> CC /\ dom F C_ CC /\ B e. CC ) )

Syntax hints:   -> wi 4   /\ wa 104   /\ w3a 1002   e. wcel 2200   A.wral 2508   E.wrex 2509   {crab 2512   C_ wss 3197   class class class wbr 4083   dom cdm 4719   -->wf 5314   ` cfv 5318  (class class class)co 6001   ^pm cpm 6796   CCcc 7997   < clt 8181   - cmin 8317   # cap 8728   RR+crp 9849   abscabs 11508   lim CC climc 15328

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 4202  ax-pow 4258  ax-pr 4293  ax-un 4524  ax-setind 4629  ax-cnex 8090

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 3889  df-br 4084  df-opab 4146  df-id 4384  df-xp 4725  df-rel 4726  df-cnv 4727  df-co 4728  df-dm 4729  df-rn 4730  df-iota 5278  df-fun 5320  df-fn 5321  df-f 5322  df-fv 5326  df-ov 6004  df-oprab 6005  df-mpo 6006  df-pm 6798  df-limced 15330

This theorem is referenced by:  limccl  15333  limcdifap  15336  limcimolemlt  15338  limcresi  15340  limccnpcntop  15349  limccnp2lem  15350  limccnp2cntop  15351  limccoap  15352