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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 28171 | . . . . 5 ⊢ (bday‘𝑋) ∈ On | |
| 2 | 1 | oneli 6499 | . . . 4 ⊢ (𝑏 ∈ (bday‘𝑋) → 𝑏 ∈ On) |
| 3 | madebday 28319 | . . . . 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 3206 | . 2 ⊢ ∀𝑏 ∈ (bday‘𝑋)∀𝑦 ∈ No ((bday‘𝑦) ⊆ 𝑏 → 𝑦 ∈ (M‘𝑏)) |
| 7 | madebdaylemlrcut 28318 | . 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 2147 ∀wral 3080 ⊆ wss 3900 Oncon0 6383 ‘cfv 6561 (class class class)co 7446 Nocsur 28030 bdaycbday 28032 |s ccuts 28178 Mcmade 28241 Lcleft 28244 Rcright 28245 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-rep 5236 ax-sep 5253 ax-nul 5264 ax-pow 5332 ax-pr 5396 ax-un 7778 |
| 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 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-tp 4593 df-op 4839 df-uni 4871 df-int 4911 df-iun 4956 df-br 5107 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5551 df-eprel 5556 df-po 5564 df-so 5565 df-fr 5609 df-we 5611 df-xp 5662 df-rel 5663 df-cnv 5664 df-co 5665 df-dm 5666 df-rn 5667 df-res 5668 df-ima 5669 df-pred 6325 df-ord 6386 df-on 6387 df-suc 6389 df-iota 6515 df-fun 6563 df-fn 6564 df-f 6565 df-f1 6566 df-fo 6567 df-f1o 6568 df-fv 6569 df-riota 7403 df-ov 7449 df-oprab 7450 df-mpo 7451 df-2nd 8029 df-frecs 8330 df-wrecs 8361 df-recs 8410 df-1o 8507 df-2o 8508 df-no 28033 df-lts 28034 df-bday 28035 df-slts 28177 df-cuts 28179 df-made 28246 df-old 28247 df-left 28249 df-right 28250 |
| This theorem is used by: cutsfo 28324 ltsn0 28325 ltslpss 28327 leslss 28328 bdayiun 28334 cutpos 28352 cutminmax 28355 addsrid 28383 addsasslem1 28422 addsasslem2 28423 negsid 28460 mulsrid 28532 addsdilem1 28570 mulsasslem1 28582 mulsasslem2 28583 elons2 28677 oncutleft 28682 oncutlt 28683 onsbnd 28700 n0fincut 28774 halfcut 28877 elreno2 28914 |
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