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Theorem omssrncard 43900
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 7824 . . 3 (𝑥 ∈ ω → 𝑥 ∈ On)
2 onelon 6350 . . . . . . . . . . 11 ((𝑥 ∈ On ∧ 𝑦𝑥) → 𝑦 ∈ On)
3 simpl 482 . . . . . . . . . . 11 ((𝑥 ∈ On ∧ 𝑦𝑥) → 𝑥 ∈ On)
4 simpr 484 . . . . . . . . . . 11 ((𝑥 ∈ On ∧ 𝑦𝑥) → 𝑦𝑥)
5 onelpss 6365 . . . . . . . . . . . 12 ((𝑦 ∈ On ∧ 𝑥 ∈ On) → (𝑦𝑥 ↔ (𝑦𝑥𝑦𝑥)))
65biimpa 476 . . . . . . . . . . 11 (((𝑦 ∈ On ∧ 𝑥 ∈ On) ∧ 𝑦𝑥) → (𝑦𝑥𝑦𝑥))
72, 3, 4, 6syl21anc 838 . . . . . . . . . 10 ((𝑥 ∈ On ∧ 𝑦𝑥) → (𝑦𝑥𝑦𝑥))
8 df-pss 3923 . . . . . . . . . 10 (𝑦𝑥 ↔ (𝑦𝑥𝑦𝑥))
97, 8sylibr 234 . . . . . . . . 9 ((𝑥 ∈ On ∧ 𝑦𝑥) → 𝑦𝑥)
109ex 412 . . . . . . . 8 (𝑥 ∈ On → (𝑦𝑥𝑦𝑥))
111, 10syl 17 . . . . . . 7 (𝑥 ∈ ω → (𝑦𝑥𝑦𝑥))
1211imdistani 568 . . . . . 6 ((𝑥 ∈ ω ∧ 𝑦𝑥) → (𝑥 ∈ ω ∧ 𝑦𝑥))
13 php 9143 . . . . . 6 ((𝑥 ∈ ω ∧ 𝑦𝑥) → ¬ 𝑥𝑦)
1412, 13syl 17 . . . . 5 ((𝑥 ∈ ω ∧ 𝑦𝑥) → ¬ 𝑥𝑦)
15 ensymb 8951 . . . . 5 (𝑥𝑦𝑦𝑥)
1614, 15sylnib 328 . . . 4 ((𝑥 ∈ ω ∧ 𝑦𝑥) → ¬ 𝑦𝑥)
1716ralrimiva 3130 . . 3 (𝑥 ∈ ω → ∀𝑦𝑥 ¬ 𝑦𝑥)
18 elrncard 43897 . . 3 (𝑥 ∈ ran card ↔ (𝑥 ∈ On ∧ ∀𝑦𝑥 ¬ 𝑦𝑥))
191, 17, 18sylanbrc 584 . 2 (𝑥 ∈ ω → 𝑥 ∈ ran card)
2019ssriv 3939 1 ω ⊆ ran card
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wa 395  wcel 2114  wne 2933  wral 3052  wss 3903  wpss 3904   class class class wbr 5100  ran crn 5633  Oncon0 6325  ωcom 7818  cen 8892  cardccrd 9859
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-10 2147  ax-11 2163  ax-12 2185  ax-ext 2709  ax-sep 5243  ax-nul 5253  ax-pow 5312  ax-pr 5379  ax-un 7690
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3or 1088  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  df-mo 2540  df-eu 2570  df-clab 2716  df-cleq 2729  df-clel 2812  df-nfc 2886  df-ne 2934  df-ral 3053  df-rex 3063  df-reu 3353  df-rab 3402  df-v 3444  df-sbc 3743  df-csb 3852  df-dif 3906  df-un 3908  df-in 3910  df-ss 3920  df-pss 3923  df-nul 4288  df-if 4482  df-pw 4558  df-sn 4583  df-pr 4585  df-op 4589  df-uni 4866  df-int 4905  df-br 5101  df-opab 5163  df-mpt 5182  df-tr 5208  df-id 5527  df-eprel 5532  df-po 5540  df-so 5541  df-fr 5585  df-we 5587  df-xp 5638  df-rel 5639  df-cnv 5640  df-co 5641  df-dm 5642  df-rn 5643  df-res 5644  df-ima 5645  df-ord 6328  df-on 6329  df-lim 6330  df-suc 6331  df-iota 6456  df-fun 6502  df-fn 6503  df-f 6504  df-f1 6505  df-fo 6506  df-f1o 6507  df-fv 6508  df-om 7819  df-1o 8407  df-er 8645  df-en 8896  df-dom 8897  df-sdom 8898  df-fin 8899  df-card 9863
This theorem is referenced by:  0iscard  43901  1iscard  43902  nna1iscard  43905
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