| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > lesloe | Structured version Visualization version GIF version | ||
| Description: Surreal less-than or equal in terms of less-than. (Contributed by Scott Fenton, 8-Dec-2021.) |
| Ref | Expression |
|---|---|
| lesloe | ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) → (𝐴 ≤s 𝐵 ↔ (𝐴 <s 𝐵 ∨ 𝐴 = 𝐵))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | lenlts 28091 | . 2 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) → (𝐴 ≤s 𝐵 ↔ ¬ 𝐵 <s 𝐴)) | |
| 2 | orcom 884 | . . . 4 ⊢ ((𝐴 <s 𝐵 ∨ 𝐴 = 𝐵) ↔ (𝐴 = 𝐵 ∨ 𝐴 <s 𝐵)) | |
| 3 | eqcom 2768 | . . . . 5 ⊢ (𝐴 = 𝐵 ↔ 𝐵 = 𝐴) | |
| 4 | 3 | orbi1i 927 | . . . 4 ⊢ ((𝐴 = 𝐵 ∨ 𝐴 <s 𝐵) ↔ (𝐵 = 𝐴 ∨ 𝐴 <s 𝐵)) |
| 5 | 2, 4 | bitri 278 | . . 3 ⊢ ((𝐴 <s 𝐵 ∨ 𝐴 = 𝐵) ↔ (𝐵 = 𝐴 ∨ 𝐴 <s 𝐵)) |
| 6 | ltsso 28015 | . . . . . 6 ⊢ <s Or No | |
| 7 | sotric 5589 | . . . . . 6 ⊢ (( <s Or No ∧ (𝐵 ∈ No ∧ 𝐴 ∈ No )) → (𝐵 <s 𝐴 ↔ ¬ (𝐵 = 𝐴 ∨ 𝐴 <s 𝐵))) | |
| 8 | 6, 7 | mpan 703 | . . . . 5 ⊢ ((𝐵 ∈ No ∧ 𝐴 ∈ No ) → (𝐵 <s 𝐴 ↔ ¬ (𝐵 = 𝐴 ∨ 𝐴 <s 𝐵))) |
| 9 | 8 | ancoms 464 | . . . 4 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) → (𝐵 <s 𝐴 ↔ ¬ (𝐵 = 𝐴 ∨ 𝐴 <s 𝐵))) |
| 10 | 9 | con2bid 357 | . . 3 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) → ((𝐵 = 𝐴 ∨ 𝐴 <s 𝐵) ↔ ¬ 𝐵 <s 𝐴)) |
| 11 | 5, 10 | bitrid 286 | . 2 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) → ((𝐴 <s 𝐵 ∨ 𝐴 = 𝐵) ↔ ¬ 𝐵 <s 𝐴)) |
| 12 | 1, 11 | bitr4d 285 | 1 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) → (𝐴 ≤s 𝐵 ↔ (𝐴 <s 𝐵 ∨ 𝐴 = 𝐵))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 401 ∨ wo 861 = wceq 1570 ∈ wcel 2145 class class class wbr 5103 Or wor 5558 No csur 27979 <s clts 27980 ≤s cles 28083 |
| 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-sep 5249 ax-nul 5260 ax-pr 5391 |
| 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-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-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-ord 6358 df-on 6359 df-suc 6361 df-iota 6487 df-fun 6533 df-fn 6534 df-f 6535 df-fv 6539 df-1o 8460 df-2o 8461 df-no 27982 df-lts 27983 df-les 28084 |
| This theorem is used by: lesloed 28097 ltlesnd 28114 leslss 28277 lemulsd 28506 mulsge0d 28514 lemuls1ad 28550 abssnid 28611 om2noseqlt2 28668 elnns2 28709 eucliddivs 28744 bdaypw2n0bndlem 28831 bdayfinbndlem1 28835 |
| Copyright terms: Public domain | W3C validator |