Theorem limcrcl 15469

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 15467	. . 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 6227	. 2 |- ( C e. ( F lim CC B ) -> ( F e. ( CC ^pm CC ) /\ B e. CC ) )
3		cnex 8216	. . . . 5 |- CC e. _V
4	3, 3	elpm2 6892	. . . 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 1007	. . 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 1005   e. wcel 2202   A.wral 2511   E.wrex 2512   {crab 2515   C_ wss 3201   class class class wbr 4093   dom cdm 4731   -->wf 5329   ` cfv 5333  (class class class)co 6028   ^pm cpm 6861   CCcc 8090   < clt 8273   - cmin 8409   # cap 8820   RR+crp 9949   abscabs 11637   lim CC climc 15465

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 2204  ax-14 2205  ax-ext 2213  ax-sep 4212  ax-pow 4270  ax-pr 4305  ax-un 4536  ax-setind 4641  ax-cnex 8183

This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2364  df-ne 2404  df-ral 2516  df-rex 2517  df-rab 2520  df-v 2805  df-sbc 3033  df-dif 3203  df-un 3205  df-in 3207  df-ss 3214  df-pw 3658  df-sn 3679  df-pr 3680  df-op 3682  df-uni 3899  df-br 4094  df-opab 4156  df-id 4396  df-xp 4737  df-rel 4738  df-cnv 4739  df-co 4740  df-dm 4741  df-rn 4742  df-iota 5293  df-fun 5335  df-fn 5336  df-f 5337  df-fv 5341  df-ov 6031  df-oprab 6032  df-mpo 6033  df-pm 6863  df-limced 15467

This theorem is referenced by:  limccl  15470  limcdifap  15473  limcimolemlt  15475  limcresi  15477  limccnpcntop  15486  limccnp2lem  15487  limccnp2cntop  15488  limccoap  15489