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| Mirrors > Home > MPE Home > Th. List > pltnlt | Structured version Visualization version GIF version | ||
| Description: The less-than relation implies the negation of its inverse. (Contributed by NM, 18-Oct-2011.) |
| Ref | Expression |
|---|---|
| pltnlt.b | ⊢ 𝐵 = (Base‘𝐾) |
| pltnlt.s | ⊢ < = (lt‘𝐾) |
| Ref | Expression |
|---|---|
| pltnlt | ⊢ (((𝐾 ∈ Poset ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 𝑋 < 𝑌) → ¬ 𝑌 < 𝑋) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | pltnlt.b | . . 3 ⊢ 𝐵 = (Base‘𝐾) | |
| 2 | eqid 2741 | . . 3 ⊢ (le‘𝐾) = (le‘𝐾) | |
| 3 | pltnlt.s | . . 3 ⊢ < = (lt‘𝐾) | |
| 4 | 1, 2, 3 | pltnle 18297 | . 2 ⊢ (((𝐾 ∈ Poset ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 𝑋 < 𝑌) → ¬ 𝑌(le‘𝐾)𝑋) |
| 5 | 2, 3 | pltle 18292 | . . . 4 ⊢ ((𝐾 ∈ Poset ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) → (𝑌 < 𝑋 → 𝑌(le‘𝐾)𝑋)) |
| 6 | 5 | 3com23 1133 | . . 3 ⊢ ((𝐾 ∈ Poset ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑌 < 𝑋 → 𝑌(le‘𝐾)𝑋)) |
| 7 | 6 | adantr 482 | . 2 ⊢ (((𝐾 ∈ Poset ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 𝑋 < 𝑌) → (𝑌 < 𝑋 → 𝑌(le‘𝐾)𝑋)) |
| 8 | 4, 7 | mtod 200 | 1 ⊢ (((𝐾 ∈ Poset ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 𝑋 < 𝑌) → ¬ 𝑌 < 𝑋) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ∧ wa 397 ∧ w3a 1093 = wceq 1548 ∈ wcel 2121 class class class wbr 5074 ‘cfv 6488 Basecbs 17174 lecple 17222 Posetcpo 18268 ltcplt 18269 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-10 2154 ax-11 2170 ax-12 2191 ax-ext 2713 ax-sep 5220 ax-nul 5230 ax-pr 5364 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-or 855 df-3an 1095 df-tru 1551 df-fal 1561 df-ex 1788 df-nf 1792 df-sb 2075 df-mo 2545 df-eu 2575 df-clab 2720 df-cleq 2733 df-clel 2816 df-nfc 2890 df-ne 2937 df-ral 3056 df-rex 3066 df-rab 3394 df-v 3435 df-sbc 3725 df-dif 3887 df-un 3889 df-in 3891 df-ss 3901 df-nul 4264 df-if 4457 df-sn 4558 df-pr 4560 df-op 4564 df-uni 4841 df-br 5075 df-opab 5137 df-mpt 5156 df-id 5515 df-xp 5626 df-rel 5627 df-cnv 5628 df-co 5629 df-dm 5630 df-iota 6444 df-fun 6490 df-fv 6496 df-proset 18255 df-poset 18274 df-plt 18289 |
| This theorem is referenced by: (None) |
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