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| Mirrors > Home > MPE Home > Th. List > noetasuplem1 | Structured version Visualization version GIF version | ||
| Description: Lemma for noeta 27726. Establish that our final surreal really is a surreal. (Contributed by Scott Fenton, 6-Dec-2021.) |
| Ref | Expression |
|---|---|
| noetasuplem.1 | ⊢ 𝑆 = if(∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦, ((℩𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦) ∪ {〈dom (℩𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦), 2o〉}), (𝑔 ∈ {𝑦 ∣ ∃𝑢 ∈ 𝐴 (𝑦 ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑦) = (𝑣 ↾ suc 𝑦)))} ↦ (℩𝑥∃𝑢 ∈ 𝐴 (𝑔 ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑔) = (𝑣 ↾ suc 𝑔)) ∧ (𝑢‘𝑔) = 𝑥)))) |
| noetasuplem.2 | ⊢ 𝑍 = (𝑆 ∪ ((suc ∪ ( bday “ 𝐵) ∖ dom 𝑆) × {1o})) |
| Ref | Expression |
|---|---|
| noetasuplem1 | ⊢ ((𝐴 ⊆ No ∧ 𝐴 ∈ V ∧ 𝐵 ∈ V) → 𝑍 ∈ No ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | noetasuplem.2 | . 2 ⊢ 𝑍 = (𝑆 ∪ ((suc ∪ ( bday “ 𝐵) ∖ dom 𝑆) × {1o})) | |
| 2 | noetasuplem.1 | . . . . 5 ⊢ 𝑆 = if(∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦, ((℩𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦) ∪ {〈dom (℩𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 ¬ 𝑥 <s 𝑦), 2o〉}), (𝑔 ∈ {𝑦 ∣ ∃𝑢 ∈ 𝐴 (𝑦 ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑦) = (𝑣 ↾ suc 𝑦)))} ↦ (℩𝑥∃𝑢 ∈ 𝐴 (𝑔 ∈ dom 𝑢 ∧ ∀𝑣 ∈ 𝐴 (¬ 𝑣 <s 𝑢 → (𝑢 ↾ suc 𝑔) = (𝑣 ↾ suc 𝑔)) ∧ (𝑢‘𝑔) = 𝑥)))) | |
| 3 | 2 | nosupno 27686 | . . . 4 ⊢ ((𝐴 ⊆ No ∧ 𝐴 ∈ V) → 𝑆 ∈ No ) |
| 4 | 3 | 3adant3 1133 | . . 3 ⊢ ((𝐴 ⊆ No ∧ 𝐴 ∈ V ∧ 𝐵 ∈ V) → 𝑆 ∈ No ) |
| 5 | bdayimaon 27676 | . . . 4 ⊢ (𝐵 ∈ V → suc ∪ ( bday “ 𝐵) ∈ On) | |
| 6 | 5 | 3ad2ant3 1136 | . . 3 ⊢ ((𝐴 ⊆ No ∧ 𝐴 ∈ V ∧ 𝐵 ∈ V) → suc ∪ ( bday “ 𝐵) ∈ On) |
| 7 | 1oex 8406 | . . . . 5 ⊢ 1o ∈ V | |
| 8 | 7 | prid1 4707 | . . . 4 ⊢ 1o ∈ {1o, 2o} |
| 9 | 8 | noextendseq 27650 | . . 3 ⊢ ((𝑆 ∈ No ∧ suc ∪ ( bday “ 𝐵) ∈ On) → (𝑆 ∪ ((suc ∪ ( bday “ 𝐵) ∖ dom 𝑆) × {1o})) ∈ No ) |
| 10 | 4, 6, 9 | syl2anc 585 | . 2 ⊢ ((𝐴 ⊆ No ∧ 𝐴 ∈ V ∧ 𝐵 ∈ V) → (𝑆 ∪ ((suc ∪ ( bday “ 𝐵) ∖ dom 𝑆) × {1o})) ∈ No ) |
| 11 | 1, 10 | eqeltrid 2841 | 1 ⊢ ((𝐴 ⊆ No ∧ 𝐴 ∈ V ∧ 𝐵 ∈ V) → 𝑍 ∈ No ) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 ∧ w3a 1087 = wceq 1542 ∈ wcel 2114 {cab 2715 ∀wral 3052 ∃wrex 3062 Vcvv 3430 ∖ cdif 3887 ∪ cun 3888 ⊆ wss 3890 ifcif 4467 {csn 4568 〈cop 4574 ∪ cuni 4851 class class class wbr 5086 ↦ cmpt 5167 × cxp 5620 dom cdm 5622 ↾ cres 5624 “ cima 5625 Oncon0 6315 suc csuc 6317 ℩cio 6444 ‘cfv 6490 ℩crio 7314 1oc1o 8389 2oc2o 8390 No csur 27622 <s clts 27623 bday cbday 27624 |
| 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-rep 5212 ax-sep 5231 ax-nul 5241 ax-pow 5300 ax-pr 5368 ax-un 7680 |
| 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-rmo 3343 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-tp 4573 df-op 4575 df-uni 4852 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5517 df-eprel 5522 df-po 5530 df-so 5531 df-fr 5575 df-we 5577 df-xp 5628 df-rel 5629 df-cnv 5630 df-co 5631 df-dm 5632 df-rn 5633 df-res 5634 df-ima 5635 df-ord 6318 df-on 6319 df-suc 6321 df-iota 6446 df-fun 6492 df-fn 6493 df-f 6494 df-fo 6496 df-fv 6498 df-riota 7315 df-1o 8396 df-2o 8397 df-no 27625 df-lts 27626 df-bday 27627 |
| This theorem is referenced by: noetasuplem3 27718 noetasuplem4 27719 noetalem1 27724 |
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