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| Mirrors > Home > MPE Home > Th. List > lestric | Structured version Visualization version GIF version | ||
| Description: Surreal trichotomy law. (Contributed by Scott Fenton, 14-Feb-2025.) |
| Ref | Expression |
|---|---|
| lestric | ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) → (𝐴 ≤s 𝐵 ∨ 𝐵 ≤s 𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ltsasym 27712 | . . . 4 ⊢ ((𝐵 ∈ No ∧ 𝐴 ∈ No ) → (𝐵 <s 𝐴 → ¬ 𝐴 <s 𝐵)) | |
| 2 | ltnles 27717 | . . . . 5 ⊢ ((𝐵 ∈ No ∧ 𝐴 ∈ No ) → (𝐵 <s 𝐴 ↔ ¬ 𝐴 ≤s 𝐵)) | |
| 3 | 2 | bicomd 223 | . . . 4 ⊢ ((𝐵 ∈ No ∧ 𝐴 ∈ No ) → (¬ 𝐴 ≤s 𝐵 ↔ 𝐵 <s 𝐴)) |
| 4 | lenlts 27716 | . . . 4 ⊢ ((𝐵 ∈ No ∧ 𝐴 ∈ No ) → (𝐵 ≤s 𝐴 ↔ ¬ 𝐴 <s 𝐵)) | |
| 5 | 1, 3, 4 | 3imtr4d 294 | . . 3 ⊢ ((𝐵 ∈ No ∧ 𝐴 ∈ No ) → (¬ 𝐴 ≤s 𝐵 → 𝐵 ≤s 𝐴)) |
| 6 | 5 | orrd 864 | . 2 ⊢ ((𝐵 ∈ No ∧ 𝐴 ∈ No ) → (𝐴 ≤s 𝐵 ∨ 𝐵 ≤s 𝐴)) |
| 7 | 6 | ancoms 458 | 1 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) → (𝐴 ≤s 𝐵 ∨ 𝐵 ≤s 𝐴)) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 ∨ wo 848 ∈ wcel 2114 class class class wbr 5085 No csur 27603 <s clts 27604 ≤s cles 27708 |
| 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 2708 ax-sep 5231 ax-nul 5241 ax-pr 5375 |
| 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 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-ral 3052 df-rex 3062 df-rab 3390 df-v 3431 df-sbc 3729 df-csb 3838 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-pss 3909 df-nul 4274 df-if 4467 df-pw 4543 df-sn 4568 df-pr 4570 df-tp 4572 df-op 4574 df-uni 4851 df-br 5086 df-opab 5148 df-mpt 5167 df-tr 5193 df-id 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-we 5586 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-ord 6326 df-on 6327 df-suc 6329 df-iota 6454 df-fun 6500 df-fn 6501 df-f 6502 df-fv 6506 df-1o 8405 df-2o 8406 df-no 27606 df-lts 27607 df-les 27709 |
| This theorem is referenced by: maxs2 27734 mins1 27735 absmuls 28236 abssge0 28237 absnegs 28239 leabss 28240 elzn0s 28390 zsoring 28401 bdayfinbndlem1 28459 z12bday 28477 bdayfin 28479 |
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