Theorem limcrcl 15523

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 15521	. . 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 6249	. 2 |- ( C e. ( F lim CC B ) -> ( F e. ( CC ^pm CC ) /\ B e. CC ) )
3		cnex 8251	. . . . 5 |- CC e. _V
4	3, 3	elpm2 6914	. . . 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 2203   A.wral 2520   E.wrex 2521   {crab 2524   C_ wss 3211   class class class wbr 4109   dom cdm 4749   -->wf 5348   ` cfv 5352  (class class class)co 6050   ^pm cpm 6883   CCcc 8125   < clt 8308   - cmin 8444   # cap 8855   RR+crp 9986   abscabs 11682   lim CC climc 15519

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 2205  ax-14 2206  ax-ext 2214  ax-sep 4228  ax-pow 4287  ax-pr 4322  ax-un 4554  ax-setind 4659  ax-cnex 8218

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 2083  df-mo 2084  df-clab 2219  df-cleq 2225  df-clel 2228  df-nfc 2373  df-ne 2413  df-ral 2525  df-rex 2526  df-rab 2529  df-v 2815  df-sbc 3043  df-dif 3213  df-un 3215  df-in 3217  df-ss 3224  df-pw 3671  df-sn 3695  df-pr 3696  df-op 3698  df-uni 3915  df-br 4110  df-opab 4172  df-id 4414  df-xp 4755  df-rel 4756  df-cnv 4757  df-co 4758  df-dm 4759  df-rn 4760  df-iota 5312  df-fun 5354  df-fn 5355  df-f 5356  df-fv 5360  df-ov 6053  df-oprab 6054  df-mpo 6055  df-pm 6885  df-limced 15521

This theorem is referenced by:  limccl  15524  limcdifap  15527  limcimolemlt  15529  limcresi  15531  limccnpcntop  15540  limccnp2lem  15541  limccnp2cntop  15542  limccoap  15543