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Mirrors > Home > MPE Home > Th. List > n0ssold | Structured version Visualization version GIF version |
Description: The non-negative surreal integers are a subset of the old set of ω. (Contributed by Scott Fenton, 18-Apr-2025.) |
Ref | Expression |
---|---|
n0ssold | ⊢ ℕ0s ⊆ ( O ‘ω) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | n0sbday 28372 | . . 3 ⊢ (𝑛 ∈ ℕ0s → ( bday ‘𝑛) ∈ ω) | |
2 | omelon 9715 | . . . 4 ⊢ ω ∈ On | |
3 | n0sno 28346 | . . . 4 ⊢ (𝑛 ∈ ℕ0s → 𝑛 ∈ No ) | |
4 | oldbday 27957 | . . . 4 ⊢ ((ω ∈ On ∧ 𝑛 ∈ No ) → (𝑛 ∈ ( O ‘ω) ↔ ( bday ‘𝑛) ∈ ω)) | |
5 | 2, 3, 4 | sylancr 586 | . . 3 ⊢ (𝑛 ∈ ℕ0s → (𝑛 ∈ ( O ‘ω) ↔ ( bday ‘𝑛) ∈ ω)) |
6 | 1, 5 | mpbird 257 | . 2 ⊢ (𝑛 ∈ ℕ0s → 𝑛 ∈ ( O ‘ω)) |
7 | 6 | ssriv 4012 | 1 ⊢ ℕ0s ⊆ ( O ‘ω) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 206 ∈ wcel 2108 ⊆ wss 3976 Oncon0 6395 ‘cfv 6573 ωcom 7903 No csur 27702 bday cbday 27704 O cold 27900 ℕ0scnn0s 28336 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1793 ax-4 1807 ax-5 1909 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2158 ax-12 2178 ax-ext 2711 ax-rep 5303 ax-sep 5317 ax-nul 5324 ax-pow 5383 ax-pr 5447 ax-un 7770 ax-inf2 9710 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 847 df-3or 1088 df-3an 1089 df-tru 1540 df-fal 1550 df-ex 1778 df-nf 1782 df-sb 2065 df-mo 2543 df-eu 2572 df-clab 2718 df-cleq 2732 df-clel 2819 df-nfc 2895 df-ne 2947 df-ral 3068 df-rex 3077 df-rmo 3388 df-reu 3389 df-rab 3444 df-v 3490 df-sbc 3805 df-csb 3922 df-dif 3979 df-un 3981 df-in 3983 df-ss 3993 df-pss 3996 df-nul 4353 df-if 4549 df-pw 4624 df-sn 4649 df-pr 4651 df-tp 4653 df-op 4655 df-ot 4657 df-uni 4932 df-int 4971 df-iun 5017 df-br 5167 df-opab 5229 df-mpt 5250 df-tr 5284 df-id 5593 df-eprel 5599 df-po 5607 df-so 5608 df-fr 5652 df-se 5653 df-we 5654 df-xp 5706 df-rel 5707 df-cnv 5708 df-co 5709 df-dm 5710 df-rn 5711 df-res 5712 df-ima 5713 df-pred 6332 df-ord 6398 df-on 6399 df-lim 6400 df-suc 6401 df-iota 6525 df-fun 6575 df-fn 6576 df-f 6577 df-f1 6578 df-fo 6579 df-f1o 6580 df-fv 6581 df-riota 7404 df-ov 7451 df-oprab 7452 df-mpo 7453 df-om 7904 df-1st 8030 df-2nd 8031 df-frecs 8322 df-wrecs 8353 df-recs 8427 df-rdg 8466 df-1o 8522 df-2o 8523 df-nadd 8722 df-no 27705 df-slt 27706 df-bday 27707 df-sle 27808 df-sslt 27844 df-scut 27846 df-0s 27887 df-1s 27888 df-made 27904 df-old 27905 df-left 27907 df-right 27908 df-norec 27989 df-norec2 28000 df-adds 28011 df-negs 28071 df-subs 28072 df-n0s 28338 |
This theorem is referenced by: (None) |
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