Users' Mathboxes Mathbox for BTernaryTau < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >   Mathboxes  >  fineqvomon Structured version   Visualization version   GIF version

Theorem fineqvomon 35759
Description: If all sets are finite, then the class of all natural numbers equals the proper class of all ordinal numbers. (Contributed by BTernaryTau, 30-Dec-2025.)
Assertion
Ref Expression
fineqvomon (Fin = V → ω = On)

Proof of Theorem fineqvomon
StepHypRef Expression
1 onfin2 9216 . 2 ω = (On ∩ Fin)
2 ineq2 4160 . . 3 (Fin = V → (On ∩ Fin) = (On ∩ V))
3 inv1 4348 . . 3 (On ∩ V) = On
42, 3eqtrdi 2812 . 2 (Fin = V → (On ∩ Fin) = On)
51, 4eqtrid 2808 1 (Fin = V → ω = On)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   = wceq 1570  Vcvv 3451   ∩ cin 3898  Oncon0 6355  ωcom 7866  Fincfn 8957
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2147  ax-9 2155  ax-10 2178  ax-11 2194  ax-12 2213  ax-ext 2733  ax-sep 5249  ax-nul 5260  ax-pr 5391  ax-un 7740
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3or 1104  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2100  df-mo 2565  df-eu 2595  df-clab 2740  df-cleq 2753  df-clel 2836  df-nfc 2910  df-ne 2957  df-ral 3078  df-rex 3088  df-reu 3367  df-rab 3414  df-v 3453  df-sbc 3740  df-csb 3848  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-pss 3919  df-nul 4280  df-if 4483  df-pw 4559  df-sn 4585  df-pr 4587  df-op 4591  df-uni 4868  df-br 5104  df-opab 5168  df-mpt 5187  df-tr 5213  df-id 5546  df-eprel 5551  df-po 5559  df-so 5560  df-fr 5604  df-we 5606  df-xp 5657  df-rel 5658  df-cnv 5659  df-co 5660  df-dm 5661  df-rn 5662  df-res 5663  df-ima 5664  df-ord 6358  df-on 6359  df-lim 6360  df-suc 6361  df-iota 6487  df-fun 6533  df-fn 6534  df-f 6535  df-f1 6536  df-fo 6537  df-f1o 6538  df-fv 6539  df-om 7867  df-1o 8460  df-en 8958  df-dom 8959  df-sdom 8960  df-fin 8961
This theorem is used by:  fineqvomonb  35760  fineqvr1ombregs  35779
  Copyright terms: Public domain W3C validator