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Theorem fncld 17078
 Description: The closed-set generator is a well-behaved function. (Contributed by Stefan O'Rear, 1-Feb-2015.)
Assertion
Ref Expression
fncld

Proof of Theorem fncld
Dummy variables are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 vex 2951 . . . . 5
21uniex 4697 . . . 4
32pwex 4374 . . 3
43rabex 4346 . 2
5 df-cld 17075 . 2
64, 5fnmpti 5565 1
 Colors of variables: wff set class Syntax hints:   wcel 1725  crab 2701   cdif 3309  cpw 3791  cuni 4007   wfn 5441  ctop 16950  ccld 17072 This theorem is referenced by:  cldrcl  17082  iscldtop  17151 This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1555  ax-5 1566  ax-17 1626  ax-9 1666  ax-8 1687  ax-13 1727  ax-14 1729  ax-6 1744  ax-7 1749  ax-11 1761  ax-12 1950  ax-ext 2416  ax-sep 4322  ax-nul 4330  ax-pow 4369  ax-pr 4395  ax-un 4693 This theorem depends on definitions:  df-bi 178  df-or 360  df-an 361  df-3an 938  df-tru 1328  df-ex 1551  df-nf 1554  df-sb 1659  df-eu 2284  df-mo 2285  df-clab 2422  df-cleq 2428  df-clel 2431  df-nfc 2560  df-ne 2600  df-ral 2702  df-rex 2703  df-rab 2706  df-v 2950  df-dif 3315  df-un 3317  df-in 3319  df-ss 3326  df-nul 3621  df-if 3732  df-pw 3793  df-sn 3812  df-pr 3813  df-op 3815  df-uni 4008  df-br 4205  df-opab 4259  df-mpt 4260  df-id 4490  df-xp 4876  df-rel 4877  df-cnv 4878  df-co 4879  df-dm 4880  df-fun 5448  df-fn 5449  df-cld 17075
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