| 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 31845 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 2761 | . . 3 ⊢ (lub‘𝐾) = (lub‘𝐾) | |
| 3 | op1cl.u | . . 3 ⊢ 1 = (1.‘𝐾) | |
| 4 | 1, 2, 3 | p1val 18600 | . 2 ⊢ (𝐾 ∈ OP → 1 = ((lub‘𝐾)‘𝐵)) |
| 5 | id 23 | . . 3 ⊢ (𝐾 ∈ OP → 𝐾 ∈ OP) | |
| 6 | eqid 2761 | . . . . 5 ⊢ (glb‘𝐾) = (glb‘𝐾) | |
| 7 | 1, 2, 6 | op01dm 40240 | . . . 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 18529 | . 2 ⊢ (𝐾 ∈ OP → ((lub‘𝐾)‘𝐵) ∈ 𝐵) |
| 10 | 4, 9 | eqeltrd 2861 | 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 5651 ‘cfv 6538 Basecbs 17387 lubclub 18483 glbcglb 18484 1.cp1 18596 OPcops 40229 |
| 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 2733 ax-rep 5232 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 |
| 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 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-ral 3078 df-rex 3088 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3453 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 5546 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-riota 7377 df-ov 7423 df-lub 18518 df-p1 18598 df-oposet 40233 |
| This theorem is used by: op1le 40249 glb0N 40250 opoc1 40259 opoc0 40260 olm11 40284 olm12 40285 ncvr1 40329 hlhgt2 40446 hl0lt1N 40447 hl2at 40462 athgt 40513 1cvrco 40529 1cvrjat 40532 pmap1N 40824 pol1N 40967 lhp2lt 41058 lhpexnle 41063 dih1 42343 dih1rn 42344 dih1cnv 42345 dihglb2 42399 dochocss 42423 dihjatc 42474 |
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