Theorem cncfrss2 22695

Description: Reverse closure of the continuous function predicate. (Contributed by Mario Carneiro, 25-Aug-2014.)

Assertion

Ref	Expression
cncfrss2	|- ( F e. ( A -cn-> B ) -> B C_ CC )

Proof of Theorem cncfrss2

Dummy variables a b f w x y z are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		df-cncf 22681	. . 3 |- -cn-> = ( a e. ~P CC , b e. ~P CC |-> { f e. ( b ^m a ) | A. x e. a A. y e. RR+ E. z e. RR+ A. w e. a ( ( abs ` ( x - w ) ) < z -> ( abs ` ( ( f ` x ) - ( f ` w ) ) ) < y ) } )
2	1	elmpt2cl2 6878	. 2 |- ( F e. ( A -cn-> B ) -> B e. ~P CC )
3	2	elpwid 4170	1 |- ( F e. ( A -cn-> B ) -> B C_ CC )

Syntax hints:   -> wi 4   e. wcel 1990   A.wral 2912   E.wrex 2913   {crab 2916   C_ wss 3574   ~Pcpw 4158   class class class wbr 4653   ` cfv 5888  (class class class)co 6650   ^m cmap 7857   CCcc 9934   < clt 10074   - cmin 10266   RR+crp 11832   abscabs 13974   -cn->ccncf 22679

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-ral 2917  df-rex 2918  df-rab 2921  df-v 3202  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-br 4654  df-opab 4713  df-xp 5120  df-dm 5124  df-iota 5851  df-fv 5896  df-ov 6653  df-oprab 6654  df-mpt2 6655  df-cncf 22681

This theorem is referenced by:  cncff  22696  cncfi  22697  rescncf  22700  climcncf  22703  cncfco  22710  cncfcnvcn  22724  cnlimci  23653  cncfmptssg  40083  cncfcompt  40096