| 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 31670 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 2765 | . . 3 ⊢ (lub‘𝐾) = (lub‘𝐾) | |
| 3 | op1cl.u | . . 3 ⊢ 1 = (1.‘𝐾) | |
| 4 | 1, 2, 3 | p1val 18508 | . 2 ⊢ (𝐾 ∈ OP → 1 = ((lub‘𝐾)‘𝐵)) |
| 5 | id 23 | . . 3 ⊢ (𝐾 ∈ OP → 𝐾 ∈ OP) | |
| 6 | eqid 2765 | . . . . 5 ⊢ (glb‘𝐾) = (glb‘𝐾) | |
| 7 | 1, 2, 6 | op01dm 40019 | . . . 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 18437 | . 2 ⊢ (𝐾 ∈ OP → ((lub‘𝐾)‘𝐵) ∈ 𝐵) |
| 10 | 4, 9 | eqeltrd 2865 | 1 ⊢ (𝐾 ∈ OP → 1 ∈ 𝐵) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∈ wcel 2146 dom cdm 5663 ‘cfv 6540 Basecbs 17295 lubclub 18391 glbcglb 18392 1.cp1 18504 OPcops 40008 |
| 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 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-rep 5240 ax-sep 5259 ax-nul 5271 ax-pow 5338 ax-pr 5406 |
| 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 2100 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-ral 3082 df-rex 3092 df-rmo 3371 df-reu 3372 df-rab 3419 df-v 3459 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4287 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-iun 4960 df-br 5112 df-opab 5176 df-mpt 5195 df-id 5558 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7376 df-ov 7422 df-lub 18426 df-p1 18506 df-oposet 40012 |
| This theorem is used by: op1le 40028 glb0N 40029 opoc1 40038 opoc0 40039 olm11 40063 olm12 40064 ncvr1 40108 hlhgt2 40225 hl0lt1N 40226 hl2at 40241 athgt 40292 1cvrco 40308 1cvrjat 40311 pmap1N 40603 pol1N 40746 lhp2lt 40837 lhpexnle 40842 dih1 42122 dih1rn 42123 dih1cnv 42124 dihglb2 42178 dochocss 42202 dihjatc 42253 |
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