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| Mirrors > Home > MPE Home > Th. List > postr | Structured version Visualization version GIF version | ||
| Description: A poset ordering is transitive. (Contributed by NM, 11-Sep-2011.) |
| Ref | Expression |
|---|---|
| posi.b | ⊢ 𝐵 = (Base‘𝐾) |
| posi.l | ⊢ ≤ = (le‘𝐾) |
| Ref | Expression |
|---|---|
| postr | ⊢ ((𝐾 ∈ Poset ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ∧ 𝑍 ∈ 𝐵)) → ((𝑋 ≤ 𝑌 ∧ 𝑌 ≤ 𝑍) → 𝑋 ≤ 𝑍)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | posi.b | . . 3 ⊢ 𝐵 = (Base‘𝐾) | |
| 2 | posi.l | . . 3 ⊢ ≤ = (le‘𝐾) | |
| 3 | 1, 2 | posi 18334 | . 2 ⊢ ((𝐾 ∈ Poset ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ∧ 𝑍 ∈ 𝐵)) → (𝑋 ≤ 𝑋 ∧ ((𝑋 ≤ 𝑌 ∧ 𝑌 ≤ 𝑋) → 𝑋 = 𝑌) ∧ ((𝑋 ≤ 𝑌 ∧ 𝑌 ≤ 𝑍) → 𝑋 ≤ 𝑍))) |
| 4 | 3 | simp3d 1144 | 1 ⊢ ((𝐾 ∈ Poset ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ∧ 𝑍 ∈ 𝐵)) → ((𝑋 ≤ 𝑌 ∧ 𝑌 ≤ 𝑍) → 𝑋 ≤ 𝑍)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 ∧ w3a 1086 = wceq 1540 ∈ wcel 2109 class class class wbr 5124 ‘cfv 6536 Basecbs 17233 lecple 17283 Posetcpo 18324 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-ext 2708 ax-nul 5281 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-sb 2066 df-clab 2715 df-cleq 2728 df-clel 2810 df-ne 2934 df-ral 3053 df-rex 3062 df-rab 3421 df-v 3466 df-dif 3934 df-un 3936 df-ss 3948 df-nul 4314 df-if 4506 df-sn 4607 df-pr 4609 df-op 4613 df-uni 4889 df-br 5125 df-iota 6489 df-fv 6544 df-poset 18330 |
| This theorem is referenced by: odupos 18343 plttr 18357 joinle 18401 meetle 18415 lattr 18459 omndadd2d 33081 omndadd2rd 33082 omndmul2 33085 atlatle 39343 cvratlem 39445 llncmp 39546 llncvrlpln 39582 lplncmp 39586 lplncvrlvol 39640 lvolcmp 39641 pmaple 39785 |
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