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Mirrors > Home > MPE Home > Th. List > Mathboxes > leatb | Structured version Visualization version GIF version |
Description: A poset element less than or equal to an atom equals either zero or the atom. (atss 30708 analog.) (Contributed by NM, 17-Nov-2011.) |
Ref | Expression |
---|---|
leatom.b | ⊢ 𝐵 = (Base‘𝐾) |
leatom.l | ⊢ ≤ = (le‘𝐾) |
leatom.z | ⊢ 0 = (0.‘𝐾) |
leatom.a | ⊢ 𝐴 = (Atoms‘𝐾) |
Ref | Expression |
---|---|
leatb | ⊢ ((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ∧ 𝑃 ∈ 𝐴) → (𝑋 ≤ 𝑃 ↔ (𝑋 = 𝑃 ∨ 𝑋 = 0 ))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | leatom.b | . . . . . 6 ⊢ 𝐵 = (Base‘𝐾) | |
2 | leatom.l | . . . . . 6 ⊢ ≤ = (le‘𝐾) | |
3 | leatom.z | . . . . . 6 ⊢ 0 = (0.‘𝐾) | |
4 | 1, 2, 3 | op0le 37200 | . . . . 5 ⊢ ((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵) → 0 ≤ 𝑋) |
5 | 4 | 3adant3 1131 | . . . 4 ⊢ ((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ∧ 𝑃 ∈ 𝐴) → 0 ≤ 𝑋) |
6 | 5 | biantrurd 533 | . . 3 ⊢ ((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ∧ 𝑃 ∈ 𝐴) → (𝑋 ≤ 𝑃 ↔ ( 0 ≤ 𝑋 ∧ 𝑋 ≤ 𝑃))) |
7 | opposet 37195 | . . . . . 6 ⊢ (𝐾 ∈ OP → 𝐾 ∈ Poset) | |
8 | 7 | 3ad2ant1 1132 | . . . . 5 ⊢ ((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ∧ 𝑃 ∈ 𝐴) → 𝐾 ∈ Poset) |
9 | 1, 3 | op0cl 37198 | . . . . . . 7 ⊢ (𝐾 ∈ OP → 0 ∈ 𝐵) |
10 | leatom.a | . . . . . . . 8 ⊢ 𝐴 = (Atoms‘𝐾) | |
11 | 1, 10 | atbase 37303 | . . . . . . 7 ⊢ (𝑃 ∈ 𝐴 → 𝑃 ∈ 𝐵) |
12 | id 22 | . . . . . . 7 ⊢ (𝑋 ∈ 𝐵 → 𝑋 ∈ 𝐵) | |
13 | 9, 11, 12 | 3anim123i 1150 | . . . . . 6 ⊢ ((𝐾 ∈ OP ∧ 𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵) → ( 0 ∈ 𝐵 ∧ 𝑃 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵)) |
14 | 13 | 3com23 1125 | . . . . 5 ⊢ ((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ∧ 𝑃 ∈ 𝐴) → ( 0 ∈ 𝐵 ∧ 𝑃 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵)) |
15 | eqid 2738 | . . . . . . 7 ⊢ ( ⋖ ‘𝐾) = ( ⋖ ‘𝐾) | |
16 | 3, 15, 10 | atcvr0 37302 | . . . . . 6 ⊢ ((𝐾 ∈ OP ∧ 𝑃 ∈ 𝐴) → 0 ( ⋖ ‘𝐾)𝑃) |
17 | 16 | 3adant2 1130 | . . . . 5 ⊢ ((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ∧ 𝑃 ∈ 𝐴) → 0 ( ⋖ ‘𝐾)𝑃) |
18 | 1, 2, 15 | cvrnbtwn4 37293 | . . . . 5 ⊢ ((𝐾 ∈ Poset ∧ ( 0 ∈ 𝐵 ∧ 𝑃 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 0 ( ⋖ ‘𝐾)𝑃) → (( 0 ≤ 𝑋 ∧ 𝑋 ≤ 𝑃) ↔ ( 0 = 𝑋 ∨ 𝑋 = 𝑃))) |
19 | 8, 14, 17, 18 | syl3anc 1370 | . . . 4 ⊢ ((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ∧ 𝑃 ∈ 𝐴) → (( 0 ≤ 𝑋 ∧ 𝑋 ≤ 𝑃) ↔ ( 0 = 𝑋 ∨ 𝑋 = 𝑃))) |
20 | eqcom 2745 | . . . . 5 ⊢ ( 0 = 𝑋 ↔ 𝑋 = 0 ) | |
21 | 20 | orbi1i 911 | . . . 4 ⊢ (( 0 = 𝑋 ∨ 𝑋 = 𝑃) ↔ (𝑋 = 0 ∨ 𝑋 = 𝑃)) |
22 | 19, 21 | bitrdi 287 | . . 3 ⊢ ((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ∧ 𝑃 ∈ 𝐴) → (( 0 ≤ 𝑋 ∧ 𝑋 ≤ 𝑃) ↔ (𝑋 = 0 ∨ 𝑋 = 𝑃))) |
23 | 6, 22 | bitrd 278 | . 2 ⊢ ((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ∧ 𝑃 ∈ 𝐴) → (𝑋 ≤ 𝑃 ↔ (𝑋 = 0 ∨ 𝑋 = 𝑃))) |
24 | orcom 867 | . 2 ⊢ ((𝑋 = 0 ∨ 𝑋 = 𝑃) ↔ (𝑋 = 𝑃 ∨ 𝑋 = 0 )) | |
25 | 23, 24 | bitrdi 287 | 1 ⊢ ((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ∧ 𝑃 ∈ 𝐴) → (𝑋 ≤ 𝑃 ↔ (𝑋 = 𝑃 ∨ 𝑋 = 0 ))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 396 ∨ wo 844 ∧ w3a 1086 = wceq 1539 ∈ wcel 2106 class class class wbr 5074 ‘cfv 6433 Basecbs 16912 lecple 16969 Posetcpo 18025 0.cp0 18141 OPcops 37186 ⋖ ccvr 37276 Atomscatm 37277 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-rep 5209 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-ral 3069 df-rex 3070 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-iun 4926 df-br 5075 df-opab 5137 df-mpt 5158 df-id 5489 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-riota 7232 df-ov 7278 df-proset 18013 df-poset 18031 df-plt 18048 df-glb 18065 df-p0 18143 df-oposet 37190 df-covers 37280 df-ats 37281 |
This theorem is referenced by: leat 37307 leat2 37308 meetat 37310 |
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