| 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 31727 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 2760 | . . 3 ⊢ (lub‘𝐾) = (lub‘𝐾) | |
| 3 | op1cl.u | . . 3 ⊢ 1 = (1.‘𝐾) | |
| 4 | 1, 2, 3 | p1val 18517 | . 2 ⊢ (𝐾 ∈ OP → 1 = ((lub‘𝐾)‘𝐵)) |
| 5 | id 23 | . . 3 ⊢ (𝐾 ∈ OP → 𝐾 ∈ OP) | |
| 6 | eqid 2760 | . . . . 5 ⊢ (glb‘𝐾) = (glb‘𝐾) | |
| 7 | 1, 2, 6 | op01dm 40059 | . . . 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 18446 | . 2 ⊢ (𝐾 ∈ OP → ((lub‘𝐾)‘𝐵) ∈ 𝐵) |
| 10 | 4, 9 | eqeltrd 2860 | 1 ⊢ (𝐾 ∈ OP → 1 ∈ 𝐵) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∈ wcel 2145 dom cdm 5655 ‘cfv 6533 Basecbs 17304 lubclub 18400 glbcglb 18401 1.cp1 18513 OPcops 40048 |
| 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 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-rep 5232 ax-sep 5251 ax-nul 5263 ax-pow 5330 ax-pr 5398 |
| 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 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 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 6489 df-fun 6535 df-fn 6536 df-f 6537 df-f1 6538 df-fo 6539 df-f1o 6540 df-fv 6541 df-riota 7371 df-ov 7417 df-lub 18435 df-p1 18515 df-oposet 40052 |
| This theorem is used by: op1le 40068 glb0N 40069 opoc1 40078 opoc0 40079 olm11 40103 olm12 40104 ncvr1 40148 hlhgt2 40265 hl0lt1N 40266 hl2at 40281 athgt 40332 1cvrco 40348 1cvrjat 40351 pmap1N 40643 pol1N 40786 lhp2lt 40877 lhpexnle 40882 dih1 42162 dih1rn 42163 dih1cnv 42164 dihglb2 42218 dochocss 42242 dihjatc 42293 |
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