Mathbox for Norm Megill |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > Mathboxes > leat3 | Structured version Visualization version GIF version |
Description: A poset element less than or equal to an atom is either an atom or zero. (Contributed by NM, 2-Dec-2012.) |
Ref | Expression |
---|---|
leatom.b | ⊢ 𝐵 = (Base‘𝐾) |
leatom.l | ⊢ ≤ = (le‘𝐾) |
leatom.z | ⊢ 0 = (0.‘𝐾) |
leatom.a | ⊢ 𝐴 = (Atoms‘𝐾) |
Ref | Expression |
---|---|
leat3 | ⊢ (((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ∧ 𝑃 ∈ 𝐴) ∧ 𝑋 ≤ 𝑃) → (𝑋 ∈ 𝐴 ∨ 𝑋 = 0 )) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | leatom.b | . . 3 ⊢ 𝐵 = (Base‘𝐾) | |
2 | leatom.l | . . 3 ⊢ ≤ = (le‘𝐾) | |
3 | leatom.z | . . 3 ⊢ 0 = (0.‘𝐾) | |
4 | leatom.a | . . 3 ⊢ 𝐴 = (Atoms‘𝐾) | |
5 | 1, 2, 3, 4 | leat 37234 | . 2 ⊢ (((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ∧ 𝑃 ∈ 𝐴) ∧ 𝑋 ≤ 𝑃) → (𝑋 = 𝑃 ∨ 𝑋 = 0 )) |
6 | simpl3 1191 | . . . 4 ⊢ (((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ∧ 𝑃 ∈ 𝐴) ∧ 𝑋 ≤ 𝑃) → 𝑃 ∈ 𝐴) | |
7 | eleq1a 2834 | . . . 4 ⊢ (𝑃 ∈ 𝐴 → (𝑋 = 𝑃 → 𝑋 ∈ 𝐴)) | |
8 | 6, 7 | syl 17 | . . 3 ⊢ (((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ∧ 𝑃 ∈ 𝐴) ∧ 𝑋 ≤ 𝑃) → (𝑋 = 𝑃 → 𝑋 ∈ 𝐴)) |
9 | 8 | orim1d 962 | . 2 ⊢ (((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ∧ 𝑃 ∈ 𝐴) ∧ 𝑋 ≤ 𝑃) → ((𝑋 = 𝑃 ∨ 𝑋 = 0 ) → (𝑋 ∈ 𝐴 ∨ 𝑋 = 0 ))) |
10 | 5, 9 | mpd 15 | 1 ⊢ (((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ∧ 𝑃 ∈ 𝐴) ∧ 𝑋 ≤ 𝑃) → (𝑋 ∈ 𝐴 ∨ 𝑋 = 0 )) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 ∨ wo 843 ∧ w3a 1085 = wceq 1539 ∈ wcel 2108 class class class wbr 5070 ‘cfv 6418 Basecbs 16840 lecple 16895 0.cp0 18056 OPcops 37113 Atomscatm 37204 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-rep 5205 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-ral 3068 df-rex 3069 df-reu 3070 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4837 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-id 5480 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-riota 7212 df-ov 7258 df-proset 17928 df-poset 17946 df-plt 17963 df-glb 17980 df-p0 18058 df-oposet 37117 df-covers 37207 df-ats 37208 |
This theorem is referenced by: cdleme22b 38282 |
Copyright terms: Public domain | W3C validator |