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Mirrors > Home > MPE Home > Th. List > Mathboxes > nosepdm | Structured version Visualization version GIF version |
Description: The first place two surreals differ is an element of the larger of their domains. (Contributed by Scott Fenton, 24-Nov-2021.) |
Ref | Expression |
---|---|
nosepdm | ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ∧ 𝐴 ≠ 𝐵) → ∩ {𝑥 ∈ On ∣ (𝐴‘𝑥) ≠ (𝐵‘𝑥)} ∈ (dom 𝐴 ∪ dom 𝐵)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | sltso 33806 | . . . 4 ⊢ <s Or No | |
2 | sotrine 33640 | . . . 4 ⊢ (( <s Or No ∧ (𝐴 ∈ No ∧ 𝐵 ∈ No )) → (𝐴 ≠ 𝐵 ↔ (𝐴 <s 𝐵 ∨ 𝐵 <s 𝐴))) | |
3 | 1, 2 | mpan 686 | . . 3 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) → (𝐴 ≠ 𝐵 ↔ (𝐴 <s 𝐵 ∨ 𝐵 <s 𝐴))) |
4 | nosepdmlem 33813 | . . . . . 6 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ∧ 𝐴 <s 𝐵) → ∩ {𝑥 ∈ On ∣ (𝐴‘𝑥) ≠ (𝐵‘𝑥)} ∈ (dom 𝐴 ∪ dom 𝐵)) | |
5 | 4 | 3expa 1116 | . . . . 5 ⊢ (((𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ 𝐴 <s 𝐵) → ∩ {𝑥 ∈ On ∣ (𝐴‘𝑥) ≠ (𝐵‘𝑥)} ∈ (dom 𝐴 ∪ dom 𝐵)) |
6 | simplr 765 | . . . . . . 7 ⊢ (((𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ 𝐵 <s 𝐴) → 𝐵 ∈ No ) | |
7 | simpll 763 | . . . . . . 7 ⊢ (((𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ 𝐵 <s 𝐴) → 𝐴 ∈ No ) | |
8 | simpr 484 | . . . . . . 7 ⊢ (((𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ 𝐵 <s 𝐴) → 𝐵 <s 𝐴) | |
9 | nosepdmlem 33813 | . . . . . . 7 ⊢ ((𝐵 ∈ No ∧ 𝐴 ∈ No ∧ 𝐵 <s 𝐴) → ∩ {𝑥 ∈ On ∣ (𝐵‘𝑥) ≠ (𝐴‘𝑥)} ∈ (dom 𝐵 ∪ dom 𝐴)) | |
10 | 6, 7, 8, 9 | syl3anc 1369 | . . . . . 6 ⊢ (((𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ 𝐵 <s 𝐴) → ∩ {𝑥 ∈ On ∣ (𝐵‘𝑥) ≠ (𝐴‘𝑥)} ∈ (dom 𝐵 ∪ dom 𝐴)) |
11 | necom 2996 | . . . . . . . 8 ⊢ ((𝐴‘𝑥) ≠ (𝐵‘𝑥) ↔ (𝐵‘𝑥) ≠ (𝐴‘𝑥)) | |
12 | 11 | rabbii 3397 | . . . . . . 7 ⊢ {𝑥 ∈ On ∣ (𝐴‘𝑥) ≠ (𝐵‘𝑥)} = {𝑥 ∈ On ∣ (𝐵‘𝑥) ≠ (𝐴‘𝑥)} |
13 | 12 | inteqi 4880 | . . . . . 6 ⊢ ∩ {𝑥 ∈ On ∣ (𝐴‘𝑥) ≠ (𝐵‘𝑥)} = ∩ {𝑥 ∈ On ∣ (𝐵‘𝑥) ≠ (𝐴‘𝑥)} |
14 | uncom 4083 | . . . . . 6 ⊢ (dom 𝐴 ∪ dom 𝐵) = (dom 𝐵 ∪ dom 𝐴) | |
15 | 10, 13, 14 | 3eltr4g 2856 | . . . . 5 ⊢ (((𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ 𝐵 <s 𝐴) → ∩ {𝑥 ∈ On ∣ (𝐴‘𝑥) ≠ (𝐵‘𝑥)} ∈ (dom 𝐴 ∪ dom 𝐵)) |
16 | 5, 15 | jaodan 954 | . . . 4 ⊢ (((𝐴 ∈ No ∧ 𝐵 ∈ No ) ∧ (𝐴 <s 𝐵 ∨ 𝐵 <s 𝐴)) → ∩ {𝑥 ∈ On ∣ (𝐴‘𝑥) ≠ (𝐵‘𝑥)} ∈ (dom 𝐴 ∪ dom 𝐵)) |
17 | 16 | ex 412 | . . 3 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) → ((𝐴 <s 𝐵 ∨ 𝐵 <s 𝐴) → ∩ {𝑥 ∈ On ∣ (𝐴‘𝑥) ≠ (𝐵‘𝑥)} ∈ (dom 𝐴 ∪ dom 𝐵))) |
18 | 3, 17 | sylbid 239 | . 2 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) → (𝐴 ≠ 𝐵 → ∩ {𝑥 ∈ On ∣ (𝐴‘𝑥) ≠ (𝐵‘𝑥)} ∈ (dom 𝐴 ∪ dom 𝐵))) |
19 | 18 | 3impia 1115 | 1 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ∧ 𝐴 ≠ 𝐵) → ∩ {𝑥 ∈ On ∣ (𝐴‘𝑥) ≠ (𝐵‘𝑥)} ∈ (dom 𝐴 ∪ dom 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 395 ∨ wo 843 ∧ w3a 1085 ∈ wcel 2108 ≠ wne 2942 {crab 3067 ∪ cun 3881 ∩ cint 4876 class class class wbr 5070 Or wor 5493 dom cdm 5580 Oncon0 6251 ‘cfv 6418 No csur 33770 <s cslt 33771 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-sep 5218 ax-nul 5225 ax-pr 5347 ax-un 7566 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-ral 3068 df-rex 3069 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-int 4877 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-ord 6254 df-on 6255 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-fv 6426 df-1o 8267 df-2o 8268 df-no 33773 df-slt 33774 |
This theorem is referenced by: nodenselem5 33818 noresle 33827 |
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