| Mathbox for Norm Megill |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > op0cl | Structured version Visualization version GIF version | ||
| Description: An orthoposet has a zero element. (h0elch 31866 analog.) (Contributed by NM, 12-Oct-2011.) |
| Ref | Expression |
|---|---|
| op0cl.b | ⊢ 𝐵 = (Base‘𝐾) |
| op0cl.z | ⊢ 0 = (0.‘𝐾) |
| Ref | Expression |
|---|---|
| op0cl | ⊢ (𝐾 ∈ OP → 0 ∈ 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | op0cl.b | . . 3 ⊢ 𝐵 = (Base‘𝐾) | |
| 2 | eqid 2760 | . . 3 ⊢ (glb‘𝐾) = (glb‘𝐾) | |
| 3 | op0cl.z | . . 3 ⊢ 0 = (0.‘𝐾) | |
| 4 | 1, 2, 3 | p0val 18608 | . 2 ⊢ (𝐾 ∈ OP → 0 = ((glb‘𝐾)‘𝐵)) |
| 5 | id 23 | . . 3 ⊢ (𝐾 ∈ OP → 𝐾 ∈ OP) | |
| 6 | eqid 2760 | . . . . 5 ⊢ (lub‘𝐾) = (lub‘𝐾) | |
| 7 | 1, 6, 2 | op01dm 40377 | . . . 4 ⊢ (𝐾 ∈ OP → (𝐵 ∈ dom (lub‘𝐾) ∧ 𝐵 ∈ dom (glb‘𝐾))) |
| 8 | 7 | simprd 501 | . . 3 ⊢ (𝐾 ∈ OP → 𝐵 ∈ dom (glb‘𝐾)) |
| 9 | 1, 2, 5, 8 | glbcl 18551 | . 2 ⊢ (𝐾 ∈ OP → ((glb‘𝐾)‘𝐵) ∈ 𝐵) |
| 10 | 4, 9 | eqeltrd 2860 | 1 ⊢ (𝐾 ∈ OP → 0 ∈ 𝐵) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1569 ∈ wcel 2144 dom cdm 5651 ‘cfv 6543 Basecbs 17396 lubclub 18492 glbcglb 18493 0.cp0 18604 OPcops 40366 |
| 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 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-rep 5231 ax-sep 5248 ax-nul 5259 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 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 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 3739 df-csb 3848 df-ss 3897 df-dif 4046 df-in 4090 df-un 4150 df-nul 4278 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 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 6497 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7381 df-ov 7427 df-glb 18528 df-p0 18606 df-oposet 40370 |
| This theorem is used by: ople0 40381 lub0N 40383 opltn0 40384 opoc1 40396 opoc0 40397 olj01 40419 olj02 40420 olm01 40430 olm02 40431 0ltat 40485 leatb 40486 hlhgt2 40583 hl0lt1N 40584 hl2at 40599 atcvr0eq 40620 lnnat 40621 atle 40630 athgt 40650 1cvratex 40667 ps-2 40672 dalemcea 40854 pmapeq0 40960 2atm2atN 40979 lhp0lt 41197 lhpn0 41198 ltrnatb 41331 cdleme3c 41424 cdleme7e 41441 dia0eldmN 42234 dia2dimlem2 42259 dia2dimlem3 42260 dib0 42358 dih0 42474 dih0bN 42475 dih0rn 42478 dihlspsnssN 42526 dihlspsnat 42527 dihatexv 42532 |
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