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Theorem inf3lem4 4625
Description: Lemma for our Axiom of Infinity => standard Axiom of Infinity. See inf3 4629 for detailed description.
Hypotheses
Ref Expression
inf3lem.1 G = {y, zz = {w x(wx) y}}
inf3lem.2 F = (rec(G, ) ω)
inf3lem.3 A V
inf3lem.4 B V
Assertion
Ref Expression
inf3lem4 ((x x x) → (A ω → (FA) (F ‘suc A)))
Distinct variable group:   x,y,z,w

Proof of Theorem inf3lem4
StepHypRef Expression
1 inf3lem.1 . . . . 5 G = {y, zz = {w x(wx) y}}
2 inf3lem.2 . . . . 5 F = (rec(G, ) ω)
3 inf3lem.3 . . . . 5 A V
4 inf3lem.4 . . . . 5 B V
51, 2, 3, 4inf3lem1 4622 . . . 4 (A ω → (FA) (F ‘suc A))
65a1i 8 . . 3 ((x x x) → (A ω → (FA) (F ‘suc A)))
71, 2, 3, 4inf3lem3 4624 . . 3 ((x x x) → (A ω → (FA) ≠ (F ‘suc A)))
86, 7jcad 602 . 2 ((x x x) → (A ω → ((FA) (F ‘suc A) (FA) ≠ (F ‘suc A))))
9 df-pss 2058 . 2 ((FA) (F ‘suc A) ↔ ((FA) (F ‘suc A) (FA) ≠ (F ‘suc A)))
108, 9syl6ibr 213 1 ((x x x) → (A ω → (FA) (F ‘suc A)))
Colors of variables: wff set class
Syntax hints:   → wi 3   wa 223   = wceq 958   wcel 960   ≠ wne 1588  {crab 1651  Vcvv 1814   ∩ cin 2049   wss 2050   wpss 2051  c0 2283  cuni 2507  {copab 2671  suc csuc 2956  ωcom 3137   cres 3178   ‘cfv 3188  reccrdg 3937
This theorem is referenced by:  inf3lem5 4626
This theorem was proved from axioms:  ax-1 4  ax-2 5  ax-3 6  ax-mp 7  ax-7 964  ax-gen 965  ax-8 966  ax-9 967  ax-10 968  ax-11 969  ax-12 970  ax-13 971  ax-14 972  ax-17 973  ax-4 975  ax-5o 977  ax-6o 980  ax-9o 1125  ax-10o 1142  ax-16 1212  ax-11o 1220  ax-ext 1462  ax-rep 2698  ax-sep 2708  ax-nul 2715  ax-pow 2748  ax-pr 2785  ax-un 2872  ax-reg 4602
This theorem depends on definitions:  df-bi 147  df-or 224  df-an 225  df-3or 778  df-3an 779  df-ex 983  df-sb 1174  df-eu 1384  df-mo 1385  df-clab 1467  df-cleq 1472  df-clel 1475  df-ne 1590  df-ral 1652  df-rex 1653  df-rab 1655  df-v 1815  df-sbc 1945  df-dif 2052  df-un 2053  df-in 2054  df-ss 2056  df-pss 2058  df-nul 2284  df-if 2366  df-pw 2406  df-sn 2416  df-pr 2417  df-tp 2419  df-op 2420  df-uni 2508  df-iun 2572  df-br 2625  df-opab 2672  df-tr 2686  df-eprel 2838  df-id 2841  df-po 2846  df-so 2856  df-fr 2923  df-we 2940  df-ord 2957  df-on 2958  df-lim 2959  df-suc 2960  df-om 3138  df-xp 3190  df-rel 3191  df-cnv 3192  df-co 3193  df-dm 3194  df-rn 3195  df-res 3196  df-ima 3197  df-fun 3198  df-fn 3199  df-fv 3204  df-rdg 3938
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