Mathbox for Thierry Arnoux |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > tlt3 | Structured version Visualization version GIF version |
Description: In a Toset, two elements must compare strictly, or be equal. (Contributed by Thierry Arnoux, 13-Apr-2018.) |
Ref | Expression |
---|---|
tlt3.b | ⊢ 𝐵 = (Base‘𝐾) |
tlt3.l | ⊢ < = (lt‘𝐾) |
Ref | Expression |
---|---|
tlt3 | ⊢ ((𝐾 ∈ Toset ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋 = 𝑌 ∨ 𝑋 < 𝑌 ∨ 𝑌 < 𝑋)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | tlt3.b | . . . 4 ⊢ 𝐵 = (Base‘𝐾) | |
2 | eqid 2738 | . . . 4 ⊢ (le‘𝐾) = (le‘𝐾) | |
3 | tlt3.l | . . . 4 ⊢ < = (lt‘𝐾) | |
4 | 1, 2, 3 | tlt2 31247 | . . 3 ⊢ ((𝐾 ∈ Toset ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋(le‘𝐾)𝑌 ∨ 𝑌 < 𝑋)) |
5 | tospos 18138 | . . . . 5 ⊢ (𝐾 ∈ Toset → 𝐾 ∈ Poset) | |
6 | 1, 2, 3 | pleval2 18055 | . . . . . 6 ⊢ ((𝐾 ∈ Poset ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋(le‘𝐾)𝑌 ↔ (𝑋 < 𝑌 ∨ 𝑋 = 𝑌))) |
7 | orcom 867 | . . . . . 6 ⊢ ((𝑋 < 𝑌 ∨ 𝑋 = 𝑌) ↔ (𝑋 = 𝑌 ∨ 𝑋 < 𝑌)) | |
8 | 6, 7 | bitrdi 287 | . . . . 5 ⊢ ((𝐾 ∈ Poset ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋(le‘𝐾)𝑌 ↔ (𝑋 = 𝑌 ∨ 𝑋 < 𝑌))) |
9 | 5, 8 | syl3an1 1162 | . . . 4 ⊢ ((𝐾 ∈ Toset ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋(le‘𝐾)𝑌 ↔ (𝑋 = 𝑌 ∨ 𝑋 < 𝑌))) |
10 | 9 | orbi1d 914 | . . 3 ⊢ ((𝐾 ∈ Toset ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → ((𝑋(le‘𝐾)𝑌 ∨ 𝑌 < 𝑋) ↔ ((𝑋 = 𝑌 ∨ 𝑋 < 𝑌) ∨ 𝑌 < 𝑋))) |
11 | 4, 10 | mpbid 231 | . 2 ⊢ ((𝐾 ∈ Toset ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → ((𝑋 = 𝑌 ∨ 𝑋 < 𝑌) ∨ 𝑌 < 𝑋)) |
12 | df-3or 1087 | . 2 ⊢ ((𝑋 = 𝑌 ∨ 𝑋 < 𝑌 ∨ 𝑌 < 𝑋) ↔ ((𝑋 = 𝑌 ∨ 𝑋 < 𝑌) ∨ 𝑌 < 𝑋)) | |
13 | 11, 12 | sylibr 233 | 1 ⊢ ((𝐾 ∈ Toset ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋 = 𝑌 ∨ 𝑋 < 𝑌 ∨ 𝑌 < 𝑋)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∨ wo 844 ∨ w3o 1085 ∧ w3a 1086 = wceq 1539 ∈ wcel 2106 class class class wbr 5074 ‘cfv 6433 Basecbs 16912 lecple 16969 Posetcpo 18025 ltcplt 18026 Tosetctos 18134 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-sep 5223 ax-nul 5230 ax-pr 5352 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-ral 3069 df-rex 3070 df-rab 3073 df-v 3434 df-sbc 3717 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-nul 4257 df-if 4460 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-br 5075 df-opab 5137 df-mpt 5158 df-id 5489 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-iota 6391 df-fun 6435 df-fv 6441 df-proset 18013 df-poset 18031 df-plt 18048 df-toset 18135 |
This theorem is referenced by: archirngz 31443 archiabllem1b 31446 archiabllem2b 31450 |
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