| Mathbox for Norm Megill |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > op1cl | Structured version Visualization version GIF version | ||
| Description: An orthoposet has a unity element. (helch 31860 analog.) (Contributed by NM, 22-Oct-2011.) |
| Ref | Expression |
|---|---|
| op1cl.b | ⊢ 𝐵 = (Base‘𝐾) |
| op1cl.u | ⊢ 1 = (1.‘𝐾) |
| Ref | Expression |
|---|---|
| op1cl | ⊢ (𝐾 ∈ OP → 1 ∈ 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | op1cl.b | . . 3 ⊢ 𝐵 = (Base‘𝐾) | |
| 2 | eqid 2763 | . . 3 ⊢ (lub‘𝐾) = (lub‘𝐾) | |
| 3 | op1cl.u | . . 3 ⊢ 1 = (1.‘𝐾) | |
| 4 | 1, 2, 3 | p1val 18615 | . 2 ⊢ (𝐾 ∈ OP → 1 = ((lub‘𝐾)‘𝐵)) |
| 5 | id 23 | . . 3 ⊢ (𝐾 ∈ OP → 𝐾 ∈ OP) | |
| 6 | eqid 2763 | . . . . 5 ⊢ (glb‘𝐾) = (glb‘𝐾) | |
| 7 | 1, 2, 6 | op01dm 40386 | . . . 4 ⊢ (𝐾 ∈ OP → (𝐵 ∈ dom (lub‘𝐾) ∧ 𝐵 ∈ dom (glb‘𝐾))) |
| 8 | 7 | simpld 500 | . . 3 ⊢ (𝐾 ∈ OP → 𝐵 ∈ dom (lub‘𝐾)) |
| 9 | 1, 2, 5, 8 | lubcl 18544 | . 2 ⊢ (𝐾 ∈ OP → ((lub‘𝐾)‘𝐵) ∈ 𝐵) |
| 10 | 4, 9 | eqeltrd 2864 | 1 ⊢ (𝐾 ∈ OP → 1 ∈ 𝐵) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1569 ∈ wcel 2146 dom cdm 5655 ‘cfv 6547 Basecbs 17402 lubclub 18498 glbcglb 18499 1.cp1 18611 OPcops 40375 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1944 ax-6 2001 ax-7 2042 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2196 ax-12 2215 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 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2101 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 6501 df-fun 6549 df-fn 6550 df-f 6551 df-f1 6552 df-fo 6553 df-f1o 6554 df-fv 6555 df-riota 7387 df-ov 7433 df-lub 18533 df-p1 18613 df-oposet 40379 |
| This theorem is used by: op1le 40395 glb0N 40396 opoc1 40405 opoc0 40406 olm11 40430 olm12 40431 ncvr1 40475 hlhgt2 40592 hl0lt1N 40593 hl2at 40608 athgt 40659 1cvrco 40675 1cvrjat 40678 pmap1N 40970 pol1N 41113 lhp2lt 41204 lhpexnle 41209 dih1 42489 dih1rn 42490 dih1cnv 42491 dihglb2 42545 dochocss 42569 dihjatc 42620 |
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