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

Theorem nndomog 39946
Description: Cardinal ordering agrees with ordinal number ordering when the smaller number is a natural number. Compare with nndomo 8712 when both are natural numbers. (Originally by NM, 17-Jun-1998.) (Contributed by RP, 5-Nov-2023.)
Assertion
Ref Expression
nndomog ((𝐴 ∈ ω ∧ 𝐵 ∈ On) → (𝐴𝐵𝐴𝐵))

Proof of Theorem nndomog
StepHypRef Expression
1 php2 8702 . . . . . 6 ((𝐴 ∈ ω ∧ 𝐵𝐴) → 𝐵𝐴)
21ex 415 . . . . 5 (𝐴 ∈ ω → (𝐵𝐴𝐵𝐴))
3 domnsym 8643 . . . . 5 (𝐴𝐵 → ¬ 𝐵𝐴)
42, 3nsyli 160 . . . 4 (𝐴 ∈ ω → (𝐴𝐵 → ¬ 𝐵𝐴))
54adantr 483 . . 3 ((𝐴 ∈ ω ∧ 𝐵 ∈ On) → (𝐴𝐵 → ¬ 𝐵𝐴))
6 nnord 7588 . . . 4 (𝐴 ∈ ω → Ord 𝐴)
7 eloni 6201 . . . 4 (𝐵 ∈ On → Ord 𝐵)
8 ordtri1 6224 . . . . 5 ((Ord 𝐴 ∧ Ord 𝐵) → (𝐴𝐵 ↔ ¬ 𝐵𝐴))
9 ordelpss 6219 . . . . . . 7 ((Ord 𝐵 ∧ Ord 𝐴) → (𝐵𝐴𝐵𝐴))
109ancoms 461 . . . . . 6 ((Ord 𝐴 ∧ Ord 𝐵) → (𝐵𝐴𝐵𝐴))
1110notbid 320 . . . . 5 ((Ord 𝐴 ∧ Ord 𝐵) → (¬ 𝐵𝐴 ↔ ¬ 𝐵𝐴))
128, 11bitrd 281 . . . 4 ((Ord 𝐴 ∧ Ord 𝐵) → (𝐴𝐵 ↔ ¬ 𝐵𝐴))
136, 7, 12syl2an 597 . . 3 ((𝐴 ∈ ω ∧ 𝐵 ∈ On) → (𝐴𝐵 ↔ ¬ 𝐵𝐴))
145, 13sylibrd 261 . 2 ((𝐴 ∈ ω ∧ 𝐵 ∈ On) → (𝐴𝐵𝐴𝐵))
15 ssdomg 8555 . . 3 (𝐵 ∈ On → (𝐴𝐵𝐴𝐵))
1615adantl 484 . 2 ((𝐴 ∈ ω ∧ 𝐵 ∈ On) → (𝐴𝐵𝐴𝐵))
1714, 16impbid 214 1 ((𝐴 ∈ ω ∧ 𝐵 ∈ On) → (𝐴𝐵𝐴𝐵))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 208  wa 398  wcel 2114  wss 3936  wpss 3937   class class class wbr 5066  Ord word 6190  Oncon0 6191  ωcom 7580  cdom 8507  csdm 8508
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2793  ax-sep 5203  ax-nul 5210  ax-pow 5266  ax-pr 5330  ax-un 7461
This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3or 1084  df-3an 1085  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2654  df-clab 2800  df-cleq 2814  df-clel 2893  df-nfc 2963  df-ne 3017  df-ral 3143  df-rex 3144  df-rab 3147  df-v 3496  df-sbc 3773  df-dif 3939  df-un 3941  df-in 3943  df-ss 3952  df-pss 3954  df-nul 4292  df-if 4468  df-pw 4541  df-sn 4568  df-pr 4570  df-tp 4572  df-op 4574  df-uni 4839  df-br 5067  df-opab 5129  df-tr 5173  df-id 5460  df-eprel 5465  df-po 5474  df-so 5475  df-fr 5514  df-we 5516  df-xp 5561  df-rel 5562  df-cnv 5563  df-co 5564  df-dm 5565  df-rn 5566  df-res 5567  df-ima 5568  df-ord 6194  df-on 6195  df-lim 6196  df-suc 6197  df-iota 6314  df-fun 6357  df-fn 6358  df-f 6359  df-f1 6360  df-fo 6361  df-f1o 6362  df-fv 6363  df-om 7581  df-er 8289  df-en 8510  df-dom 8511  df-sdom 8512
This theorem is referenced by:  harsucnn  39952
  Copyright terms: Public domain W3C validator