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Theorem elsymgrn 10486
Description: Two ways of saying a function is a 1-1-onto mapping of A to itself. (Contributed by Paul Chapman, 25-Feb-2008.)
Hypotheses
Ref Expression
elsymgrn.1 |- A e. V
elsymgrn.2 |- P = {x | x:A-1-1-onto->A}
Assertion
Ref Expression
elsymgrn |- (F e. P <-> F:A-1-1-onto->A)
Distinct variable groups:   x,A   x,F

Proof of Theorem elsymgrn
StepHypRef Expression
1 elisset 1864 . 2 |- (F e. P -> F e. V)
2 f1of 3746 . . 3 |- (F:A-1-1-onto->A -> F:A-->A)
3 elsymgrn.1 . . . 4 |- A e. V
4 fex 3709 . . . 4 |- ((F:A-->A /\ A e. V) -> F e. V)
53, 4mpan2 708 . . 3 |- (F:A-->A -> F e. V)
62, 5syl 10 . 2 |- (F:A-1-1-onto->A -> F e. V)
7 f1oeq1 3741 . . 3 |- (x = F -> (x:A-1-1-onto->A <-> F:A-1-1-onto->A))
8 elsymgrn.2 . . 3 |- P = {x | x:A-1-1-onto->A}
97, 8elab2g 1947 . 2 |- (F e. V -> (F e. P <-> F:A-1-1-onto->A))
101, 6, 9pm5.21nii 691 1 |- (F e. P <-> F:A-1-1-onto->A)
Colors of variables: wff set class
Syntax hints:   <-> wb 153   = wceq 997   e. wcel 999  {cab 1509  Vcvv 1858  -->wf 3235  -1-1-onto->wf1o 3238
This theorem is referenced by:  symgoprab 10487  symgf 10490  symggrpi 10491  symgidi 10492  cayleylem1 10494  cayleylem2 10495
This theorem was proved from axioms:  ax-1 4  ax-2 5  ax-3 6  ax-mp 7  ax-7 1003  ax-gen 1004  ax-8 1005  ax-10 1007  ax-11 1008  ax-12 1009  ax-13 1010  ax-14 1011  ax-17 1012  ax-4 1014  ax-5o 1016  ax-6o 1019  ax-9o 1164  ax-10o 1182  ax-16 1252  ax-11o 1260  ax-ext 1504  ax-rep 2748  ax-sep 2758  ax-pow 2798  ax-pr 2835  ax-un 2922
This theorem depends on definitions:  df-bi 154  df-or 231  df-an 232  df-ex 1022  df-sb 1214  df-eu 1424  df-mo 1425  df-clab 1510  df-cleq 1515  df-clel 1518  df-ne 1634  df-rex 1697  df-v 1859  df-dif 2100  df-un 2101  df-in 2102  df-ss 2104  df-nul 2332  df-pw 2454  df-sn 2464  df-pr 2465  df-op 2468  df-uni 2558  df-br 2675  df-opab 2722  df-id 2891  df-xp 3241  df-rel 3242  df-cnv 3243  df-co 3244  df-dm 3245  df-rn 3246  df-res 3247  df-ima 3248  df-fun 3249  df-fn 3250  df-f 3251  df-f1 3252  df-fo 3253  df-f1o 3254
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