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| Mirrors > Home > MPE Home > Th. List > ltsrecd | Structured version Visualization version GIF version | ||
| Description: A comparison law for surreals considered as cuts of sets of surreals. (Contributed by Scott Fenton, 5-Dec-2025.) |
| Ref | Expression |
|---|---|
| ltsrecd.1 | ⊢ (𝜑 → 𝐴 <<s 𝐵) |
| ltsrecd.2 | ⊢ (𝜑 → 𝐶 <<s 𝐷) |
| ltsrecd.3 | ⊢ (𝜑 → 𝑋 = (𝐴 |s 𝐵)) |
| ltsrecd.4 | ⊢ (𝜑 → 𝑌 = (𝐶 |s 𝐷)) |
| Ref | Expression |
|---|---|
| ltsrecd | ⊢ (𝜑 → (𝑋 <s 𝑌 ↔ (∃𝑐 ∈ 𝐶 𝑋 ≤s 𝑐 ∨ ∃𝑏 ∈ 𝐵 𝑏 ≤s 𝑌))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ltsrecd.1 | . 2 ⊢ (𝜑 → 𝐴 <<s 𝐵) | |
| 2 | ltsrecd.2 | . 2 ⊢ (𝜑 → 𝐶 <<s 𝐷) | |
| 3 | ltsrecd.3 | . 2 ⊢ (𝜑 → 𝑋 = (𝐴 |s 𝐵)) | |
| 4 | ltsrecd.4 | . 2 ⊢ (𝜑 → 𝑌 = (𝐶 |s 𝐷)) | |
| 5 | ltsrec 27797 | . 2 ⊢ (((𝐴 <<s 𝐵 ∧ 𝐶 <<s 𝐷) ∧ (𝑋 = (𝐴 |s 𝐵) ∧ 𝑌 = (𝐶 |s 𝐷))) → (𝑋 <s 𝑌 ↔ (∃𝑐 ∈ 𝐶 𝑋 ≤s 𝑐 ∨ ∃𝑏 ∈ 𝐵 𝑏 ≤s 𝑌))) | |
| 6 | 1, 2, 3, 4, 5 | syl22anc 838 | 1 ⊢ (𝜑 → (𝑋 <s 𝑌 ↔ (∃𝑐 ∈ 𝐶 𝑋 ≤s 𝑐 ∨ ∃𝑏 ∈ 𝐵 𝑏 ≤s 𝑌))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∨ wo 847 = wceq 1541 ∃wrex 3060 class class class wbr 5098 (class class class)co 7358 <s clts 27608 ≤s cles 27712 <<s cslts 27753 |s ccuts 27755 |
| 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-uni 4864 df-int 4903 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-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-ord 6320 df-on 6321 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-1o 8397 df-2o 8398 df-no 27610 df-lts 27611 df-bday 27612 df-les 27713 df-slts 27754 df-cuts 27756 |
| This theorem is referenced by: ltsn0 27902 leadds1 27985 oncutlt 28260 n0fincut 28351 halfcut 28454 |
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