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| Mirrors > Home > MPE Home > Th. List > lrcut | Structured version Visualization version GIF version | ||
| Description: A surreal is equal to the cut of its left and right sets. (Contributed by Scott Fenton, 19-Aug-2024.) |
| Ref | Expression |
|---|---|
| lrcut | ⊢ (𝑋 ∈ No → (( L ‘𝑋) |s ( R ‘𝑋)) = 𝑋) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | bdayon 28120 | . . . . 5 ⊢ ( bday ‘𝑋) ∈ On | |
| 2 | 1 | oneli 6471 | . . . 4 ⊢ (𝑏 ∈ ( bday ‘𝑋) → 𝑏 ∈ On) |
| 3 | madebday 28268 | . . . . 5 ⊢ ((𝑏 ∈ On ∧ 𝑦 ∈ No ) → (𝑦 ∈ ( M ‘𝑏) ↔ ( bday ‘𝑦) ⊆ 𝑏)) | |
| 4 | 3 | biimprd 251 | . . . 4 ⊢ ((𝑏 ∈ On ∧ 𝑦 ∈ No ) → (( bday ‘𝑦) ⊆ 𝑏 → 𝑦 ∈ ( M ‘𝑏))) |
| 5 | 2, 4 | sylan 592 | . . 3 ⊢ ((𝑏 ∈ ( bday ‘𝑋) ∧ 𝑦 ∈ No ) → (( bday ‘𝑦) ⊆ 𝑏 → 𝑦 ∈ ( M ‘𝑏))) |
| 6 | 5 | rgen2 3203 | . 2 ⊢ ∀𝑏 ∈ ( bday ‘𝑋)∀𝑦 ∈ No (( bday ‘𝑦) ⊆ 𝑏 → 𝑦 ∈ ( M ‘𝑏)) |
| 7 | madebdaylemlrcut 28267 | . 2 ⊢ ((∀𝑏 ∈ ( bday ‘𝑋)∀𝑦 ∈ No (( bday ‘𝑦) ⊆ 𝑏 → 𝑦 ∈ ( M ‘𝑏)) ∧ 𝑋 ∈ No ) → (( L ‘𝑋) |s ( R ‘𝑋)) = 𝑋) | |
| 8 | 6, 7 | mpan 703 | 1 ⊢ (𝑋 ∈ No → (( L ‘𝑋) |s ( R ‘𝑋)) = 𝑋) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2145 ∀wral 3077 ⊆ wss 3899 Oncon0 6355 ‘cfv 6531 (class class class)co 7412 No csur 27979 bday cbday 27981 |s ccuts 28127 M cmade 28190 L cleft 28193 R cright 28194 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-rep 5232 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7740 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-ral 3078 df-rex 3088 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-tp 4589 df-op 4591 df-uni 4868 df-int 4908 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6297 df-ord 6358 df-on 6359 df-suc 6361 df-iota 6487 df-fun 6533 df-fn 6534 df-f 6535 df-f1 6536 df-fo 6537 df-f1o 6538 df-fv 6539 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-2nd 7991 df-frecs 8283 df-wrecs 8314 df-recs 8363 df-1o 8460 df-2o 8461 df-no 27982 df-lts 27983 df-bday 27984 df-slts 28126 df-cuts 28128 df-made 28195 df-old 28196 df-left 28198 df-right 28199 |
| This theorem is used by: cutsfo 28273 ltsn0 28274 ltslpss 28276 leslss 28277 bdayiun 28283 cutpos 28301 cutminmax 28304 addsrid 28332 addsasslem1 28371 addsasslem2 28372 negsid 28409 mulsrid 28481 addsdilem1 28519 mulsasslem1 28531 mulsasslem2 28532 elons2 28626 oncutleft 28631 oncutlt 28632 onsbnd 28649 n0fincut 28723 halfcut 28826 elreno2 28863 |
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