| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > n0ssoldg | Structured version Visualization version GIF version | ||
| Description: The non-negative surreal integers are a subset of the old set of ω. To avoid the axiom of infinity, we include it as an antecedent. (Contributed by Scott Fenton, 20-Feb-2026.) |
| Ref | Expression |
|---|---|
| n0ssoldg | ⊢ (ω ∈ V → ℕ0s ⊆ ( O ‘ω)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | n0no 28321 | . . . 4 ⊢ (𝑥 ∈ ℕ0s → 𝑥 ∈ No ) | |
| 2 | n0bday 28350 | . . . 4 ⊢ (𝑥 ∈ ℕ0s → ( bday ‘𝑥) ∈ ω) | |
| 3 | 1, 2 | jca 511 | . . 3 ⊢ (𝑥 ∈ ℕ0s → (𝑥 ∈ No ∧ ( bday ‘𝑥) ∈ ω)) |
| 4 | omelon2 7821 | . . . . 5 ⊢ (ω ∈ V → ω ∈ On) | |
| 5 | oldbday 27899 | . . . . . . 7 ⊢ ((ω ∈ On ∧ 𝑥 ∈ No ) → (𝑥 ∈ ( O ‘ω) ↔ ( bday ‘𝑥) ∈ ω)) | |
| 6 | 5 | biimprd 248 | . . . . . 6 ⊢ ((ω ∈ On ∧ 𝑥 ∈ No ) → (( bday ‘𝑥) ∈ ω → 𝑥 ∈ ( O ‘ω))) |
| 7 | 6 | ex 412 | . . . . 5 ⊢ (ω ∈ On → (𝑥 ∈ No → (( bday ‘𝑥) ∈ ω → 𝑥 ∈ ( O ‘ω)))) |
| 8 | 4, 7 | syl 17 | . . . 4 ⊢ (ω ∈ V → (𝑥 ∈ No → (( bday ‘𝑥) ∈ ω → 𝑥 ∈ ( O ‘ω)))) |
| 9 | 8 | impd 410 | . . 3 ⊢ (ω ∈ V → ((𝑥 ∈ No ∧ ( bday ‘𝑥) ∈ ω) → 𝑥 ∈ ( O ‘ω))) |
| 10 | 3, 9 | syl5 34 | . 2 ⊢ (ω ∈ V → (𝑥 ∈ ℕ0s → 𝑥 ∈ ( O ‘ω))) |
| 11 | 10 | ssrdv 3939 | 1 ⊢ (ω ∈ V → ℕ0s ⊆ ( O ‘ω)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 ∈ wcel 2113 Vcvv 3440 ⊆ wss 3901 Oncon0 6317 ‘cfv 6492 ωcom 7808 No csur 27609 bday cbday 27611 O cold 27821 ℕ0scn0s 28310 |
| 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 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2184 ax-ext 2708 ax-rep 5224 ax-sep 5241 ax-nul 5251 ax-pow 5310 ax-pr 5377 ax-un 7680 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-ral 3052 df-rex 3061 df-rmo 3350 df-reu 3351 df-rab 3400 df-v 3442 df-sbc 3741 df-csb 3850 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-pss 3921 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4581 df-pr 4583 df-tp 4585 df-op 4587 df-ot 4589 df-uni 4864 df-int 4903 df-iun 4948 df-br 5099 df-opab 5161 df-mpt 5180 df-tr 5206 df-id 5519 df-eprel 5524 df-po 5532 df-so 5533 df-fr 5577 df-se 5578 df-we 5579 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-pred 6259 df-ord 6320 df-on 6321 df-lim 6322 df-suc 6323 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-riota 7315 df-ov 7361 df-oprab 7362 df-mpo 7363 df-om 7809 df-1st 7933 df-2nd 7934 df-frecs 8223 df-wrecs 8254 df-recs 8303 df-rdg 8341 df-1o 8397 df-2o 8398 df-nadd 8594 df-no 27612 df-lts 27613 df-bday 27614 df-les 27715 df-slts 27756 df-cuts 27758 df-0s 27805 df-1s 27806 df-made 27825 df-old 27826 df-left 27828 df-right 27829 df-norec 27936 df-norec2 27947 df-adds 27958 df-negs 28019 df-subs 28020 df-n0s 28312 |
| This theorem is referenced by: n0ssold 28352 oldfib 28375 |
| Copyright terms: Public domain | W3C validator |