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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 27726 | . . . 4 ⊢ ((𝐵 ∈ No ∧ 𝐴 ∈ No ) → (𝐵 <s 𝐴 → ¬ 𝐴 <s 𝐵)) | |
| 2 | ltnles 27731 | . . . . 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 27730 | . . . 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 5086 No csur 27617 <s clts 27618 ≤s cles 27722 |
| 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 2709 ax-sep 5231 ax-nul 5241 ax-pr 5370 |
| 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 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-ral 3053 df-rex 3063 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-tp 4573 df-op 4575 df-uni 4852 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 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-fv 6500 df-1o 8398 df-2o 8399 df-no 27620 df-lts 27621 df-les 27723 |
| This theorem is referenced by: maxs2 27748 mins1 27749 absmuls 28250 abssge0 28251 absnegs 28253 leabss 28254 elzn0s 28404 zsoring 28415 bdayfinbndlem1 28473 z12bday 28491 bdayfin 28493 |
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