Theorem limcrcl 15682

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 15680	. . 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 6274	. 2 |- ( C e. ( F lim CC B ) -> ( F e. ( CC ^pm CC ) /\ B e. CC ) )
3		cnex 8293	. . . . 5 |- CC e. _V
4	3, 3	elpm2 6951	. . . 4 |- ( F e. ( CC ^pm CC ) <-> ( F : dom F --> CC /\ dom F C_ CC ) )
5	4	anbi1i 462	. . 3 |- ( ( F e. ( CC ^pm CC ) /\ B e. CC ) <-> ( ( F : dom F --> CC /\ dom F C_ CC ) /\ B e. CC ) )
6		df-3an 1011	. . 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 1009   e. wcel 2209   A.wral 2528   E.wrex 2529   {crab 2532   C_ wss 3220   class class class wbr 4125   dom cdm 4769   -->wf 5368   ` cfv 5372  (class class class)co 6075   ^pm cpm 6913   CCcc 8167   < clt 8350   - cmin 8487   # cap 8899   RR+crp 10033   abscabs 11741   lim CC climc 15678

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 623  ax-in2 624  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-14 2212  ax-ext 2220  ax-sep 4244  ax-pow 4306  ax-pr 4341  ax-un 4573  ax-setind 4679  ax-cnex 8260

This theorem depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-fal 1408  df-nf 1514  df-sb 1816  df-eu 2089  df-mo 2090  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ne 2421  df-ral 2533  df-rex 2534  df-rab 2537  df-v 2823  df-sbc 3052  df-dif 3222  df-un 3224  df-in 3226  df-ss 3233  df-pw 3687  df-sn 3711  df-pr 3712  df-op 3714  df-uni 3931  df-br 4126  df-opab 4188  df-id 4433  df-xp 4775  df-rel 4776  df-cnv 4777  df-co 4778  df-dm 4779  df-rn 4780  df-iota 5332  df-fun 5374  df-fn 5375  df-f 5376  df-fv 5380  df-ov 6078  df-oprab 6079  df-mpo 6080  df-pm 6915  df-limced 15680

This theorem is referenced by:  limccl  15683  limcdifap  15686  limcimolemlt  15688  limcresi  15690  limccnpcntop  15699  limccnp2lem  15700  limccnp2cntop  15701  limccoap  15702