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Theorem omssrncard 43993
Description: All natural numbers are cardinals. (Contributed by RP, 1-Oct-2023.)
Assertion
Ref Expression
omssrncard ω ⊆ ran card

Proof of Theorem omssrncard
Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 nnon 7813 . . 3 (𝑥 ∈ ω → 𝑥 ∈ On)
2 onelon 6336 . . . . . . . . . . 11 ((𝑥 ∈ On ∧ 𝑦𝑥) → 𝑦 ∈ On)
3 simpl 483 . . . . . . . . . . 11 ((𝑥 ∈ On ∧ 𝑦𝑥) → 𝑥 ∈ On)
4 simpr 485 . . . . . . . . . . 11 ((𝑥 ∈ On ∧ 𝑦𝑥) → 𝑦𝑥)
5 onelpss 6351 . . . . . . . . . . . 12 ((𝑦 ∈ On ∧ 𝑥 ∈ On) → (𝑦𝑥 ↔ (𝑦𝑥𝑦𝑥)))
65biimpa 477 . . . . . . . . . . 11 (((𝑦 ∈ On ∧ 𝑥 ∈ On) ∧ 𝑦𝑥) → (𝑦𝑥𝑦𝑥))
72, 3, 4, 6syl21anc 843 . . . . . . . . . 10 ((𝑥 ∈ On ∧ 𝑦𝑥) → (𝑦𝑥𝑦𝑥))
8 df-pss 3903 . . . . . . . . . 10 (𝑦𝑥 ↔ (𝑦𝑥𝑦𝑥))
97, 8sylibr 235 . . . . . . . . 9 ((𝑥 ∈ On ∧ 𝑦𝑥) → 𝑦𝑥)
109ex 413 . . . . . . . 8 (𝑥 ∈ On → (𝑦𝑥𝑦𝑥))
111, 10syl 17 . . . . . . 7 (𝑥 ∈ ω → (𝑦𝑥𝑦𝑥))
1211imdistani 573 . . . . . 6 ((𝑥 ∈ ω ∧ 𝑦𝑥) → (𝑥 ∈ ω ∧ 𝑦𝑥))
13 php 9132 . . . . . 6 ((𝑥 ∈ ω ∧ 𝑦𝑥) → ¬ 𝑥𝑦)
1412, 13syl 17 . . . . 5 ((𝑥 ∈ ω ∧ 𝑦𝑥) → ¬ 𝑥𝑦)
15 ensymb 8940 . . . . 5 (𝑥𝑦𝑦𝑥)
1614, 15sylnib 329 . . . 4 ((𝑥 ∈ ω ∧ 𝑦𝑥) → ¬ 𝑦𝑥)
1716ralrimiva 3131 . . 3 (𝑥 ∈ ω → ∀𝑦𝑥 ¬ 𝑦𝑥)
18 elrncard 43990 . . 3 (𝑥 ∈ ran card ↔ (𝑥 ∈ On ∧ ∀𝑦𝑥 ¬ 𝑦𝑥))
191, 17, 18sylanbrc 589 . 2 (𝑥 ∈ ω → 𝑥 ∈ ran card)
2019ssriv 3919 1 ω ⊆ ran card
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wa 396  wcel 2119  wne 2934  wral 3053  wss 3883  wpss 3884   class class class wbr 5073  ran crn 5620  Oncon0 6311  ωcom 7807  cen 8881  cardccrd 9851
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1802  ax-4 1816  ax-5 1917  ax-6 1974  ax-7 2015  ax-8 2121  ax-9 2129  ax-10 2152  ax-11 2168  ax-12 2189  ax-ext 2711  ax-sep 5219  ax-nul 5229  ax-pow 5295  ax-pr 5363  ax-un 7679
This theorem depends on definitions:  df-bi 208  df-an 397  df-or 854  df-3or 1093  df-3an 1094  df-tru 1550  df-fal 1560  df-ex 1787  df-nf 1791  df-sb 2074  df-mo 2543  df-eu 2573  df-clab 2718  df-cleq 2731  df-clel 2814  df-nfc 2888  df-ne 2935  df-ral 3054  df-rex 3064  df-reu 3345  df-rab 3392  df-v 3433  df-sbc 3724  df-csb 3832  df-dif 3886  df-un 3888  df-in 3890  df-ss 3900  df-pss 3903  df-nul 4263  df-if 4456  df-pw 4532  df-sn 4557  df-pr 4559  df-op 4563  df-uni 4840  df-int 4879  df-br 5074  df-opab 5136  df-mpt 5155  df-tr 5181  df-id 5514  df-eprel 5519  df-po 5527  df-so 5528  df-fr 5572  df-we 5574  df-xp 5625  df-rel 5626  df-cnv 5627  df-co 5628  df-dm 5629  df-rn 5630  df-res 5631  df-ima 5632  df-ord 6314  df-on 6315  df-lim 6316  df-suc 6317  df-iota 6442  df-fun 6488  df-fn 6489  df-f 6490  df-f1 6491  df-fo 6492  df-f1o 6493  df-fv 6494  df-om 7808  df-1o 8396  df-er 8634  df-en 8885  df-dom 8886  df-sdom 8887  df-fin 8888  df-card 9855
This theorem is referenced by:  0iscard  43994  1iscard  43995  nna1iscard  43998
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