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| Mirrors > Home > MPE Home > Th. List > ple1 | Structured version Visualization version GIF version | ||
| Description: Any element is less than or equal to a poset's upper bound (if defined). (Contributed by NM, 22-Oct-2011.) (Revised by NM, 13-Sep-2018.) |
| Ref | Expression |
|---|---|
| ple1.b | ⊢ 𝐵 = (Base‘𝐾) |
| ple1.u | ⊢ 𝑈 = (lub‘𝐾) |
| ple1.l | ⊢ ≤ = (le‘𝐾) |
| ple1.1 | ⊢ 1 = (1.‘𝐾) |
| ple1.k | ⊢ (𝜑 → 𝐾 ∈ 𝑉) |
| ple1.x | ⊢ (𝜑 → 𝑋 ∈ 𝐵) |
| ple1.d | ⊢ (𝜑 → 𝐵 ∈ dom 𝑈) |
| Ref | Expression |
|---|---|
| ple1 | ⊢ (𝜑 → 𝑋 ≤ 1 ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ple1.b | . . 3 ⊢ 𝐵 = (Base‘𝐾) | |
| 2 | ple1.l | . . 3 ⊢ ≤ = (le‘𝐾) | |
| 3 | ple1.u | . . 3 ⊢ 𝑈 = (lub‘𝐾) | |
| 4 | ple1.k | . . 3 ⊢ (𝜑 → 𝐾 ∈ 𝑉) | |
| 5 | ple1.d | . . 3 ⊢ (𝜑 → 𝐵 ∈ dom 𝑈) | |
| 6 | ple1.x | . . 3 ⊢ (𝜑 → 𝑋 ∈ 𝐵) | |
| 7 | 1, 2, 3, 4, 5, 6 | luble 18557 | . 2 ⊢ (𝜑 → 𝑋 ≤ (𝑈‘𝐵)) |
| 8 | ple1.1 | . . . 4 ⊢ 1 = (1.‘𝐾) | |
| 9 | 1, 3, 8 | p1val 18626 | . . 3 ⊢ (𝐾 ∈ 𝑉 → 1 = (𝑈‘𝐵)) |
| 10 | 4, 9 | syl 18 | . 2 ⊢ (𝜑 → 1 = (𝑈‘𝐵)) |
| 11 | 7, 10 | breqtrrd 5136 | 1 ⊢ (𝜑 → 𝑋 ≤ 1 ) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∈ wcel 2147 class class class wbr 5106 dom cdm 5655 ‘cfv 6555 Basecbs 17413 lecple 17461 lubclub 18509 1.cp1 18622 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-rep 5235 ax-sep 5252 ax-nul 5263 ax-pow 5331 ax-pr 5395 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-iun 4956 df-br 5107 df-opab 5171 df-mpt 5190 df-id 5550 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-iota 6509 df-fun 6557 df-fn 6558 df-f 6559 df-f1 6560 df-fo 6561 df-f1o 6562 df-fv 6563 df-riota 7397 df-lub 18544 df-p1 18624 |
| This theorem is used by: ople1 40439 lhp2lt 41249 |
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