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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 18419 | . 2 ⊢ (𝜑 → 𝑋 ≤ (𝑈‘𝐵)) |
| 8 | ple1.1 | . . . 4 ⊢ 1 = (1.‘𝐾) | |
| 9 | 1, 3, 8 | p1val 18488 | . . 3 ⊢ (𝐾 ∈ 𝑉 → 1 = (𝑈‘𝐵)) |
| 10 | 4, 9 | syl 18 | . 2 ⊢ (𝜑 → 1 = (𝑈‘𝐵)) |
| 11 | 7, 10 | breqtrrd 5138 | 1 ⊢ (𝜑 → 𝑋 ≤ 1 ) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1569 ∈ wcel 2142 class class class wbr 5108 dom cdm 5660 ‘cfv 6536 Basecbs 17275 lecple 17323 lubclub 18371 1.cp1 18484 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1824 ax-4 1838 ax-5 1939 ax-6 1996 ax-7 2037 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-rep 5237 ax-sep 5256 ax-nul 5268 ax-pow 5335 ax-pr 5403 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1104 df-tru 1572 df-fal 1582 df-ex 1809 df-nf 1813 df-sb 2096 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3079 df-rex 3089 df-rmo 3368 df-reu 3369 df-rab 3416 df-v 3456 df-sbc 3744 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4487 df-pw 4563 df-sn 4589 df-pr 4591 df-op 4595 df-uni 4872 df-iun 4957 df-br 5109 df-opab 5173 df-mpt 5192 df-id 5555 df-xp 5666 df-rel 5667 df-cnv 5668 df-co 5669 df-dm 5670 df-rn 5671 df-res 5672 df-ima 5673 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7369 df-lub 18406 df-p1 18486 |
| This theorem is used by: ople1 39993 lhp2lt 40803 |
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