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Mathbox for Norm Megill |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > atlle0 | Structured version Visualization version GIF version |
Description: An element less than or equal to zero equals zero. (chle0 28430 analog.) (Contributed by NM, 21-Oct-2011.) |
Ref | Expression |
---|---|
atl0le.b | ⊢ 𝐵 = (Base‘𝐾) |
atl0le.l | ⊢ ≤ = (le‘𝐾) |
atl0le.z | ⊢ 0 = (0.‘𝐾) |
Ref | Expression |
---|---|
atlle0 | ⊢ ((𝐾 ∈ AtLat ∧ 𝑋 ∈ 𝐵) → (𝑋 ≤ 0 ↔ 𝑋 = 0 )) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | atl0le.b | . . . 4 ⊢ 𝐵 = (Base‘𝐾) | |
2 | atl0le.l | . . . 4 ⊢ ≤ = (le‘𝐾) | |
3 | atl0le.z | . . . 4 ⊢ 0 = (0.‘𝐾) | |
4 | 1, 2, 3 | atl0le 34909 | . . 3 ⊢ ((𝐾 ∈ AtLat ∧ 𝑋 ∈ 𝐵) → 0 ≤ 𝑋) |
5 | 4 | biantrud 527 | . 2 ⊢ ((𝐾 ∈ AtLat ∧ 𝑋 ∈ 𝐵) → (𝑋 ≤ 0 ↔ (𝑋 ≤ 0 ∧ 0 ≤ 𝑋))) |
6 | atlpos 34906 | . . . 4 ⊢ (𝐾 ∈ AtLat → 𝐾 ∈ Poset) | |
7 | 6 | adantr 480 | . . 3 ⊢ ((𝐾 ∈ AtLat ∧ 𝑋 ∈ 𝐵) → 𝐾 ∈ Poset) |
8 | simpr 476 | . . 3 ⊢ ((𝐾 ∈ AtLat ∧ 𝑋 ∈ 𝐵) → 𝑋 ∈ 𝐵) | |
9 | 1, 3 | atl0cl 34908 | . . . 4 ⊢ (𝐾 ∈ AtLat → 0 ∈ 𝐵) |
10 | 9 | adantr 480 | . . 3 ⊢ ((𝐾 ∈ AtLat ∧ 𝑋 ∈ 𝐵) → 0 ∈ 𝐵) |
11 | 1, 2 | posasymb 16999 | . . 3 ⊢ ((𝐾 ∈ Poset ∧ 𝑋 ∈ 𝐵 ∧ 0 ∈ 𝐵) → ((𝑋 ≤ 0 ∧ 0 ≤ 𝑋) ↔ 𝑋 = 0 )) |
12 | 7, 8, 10, 11 | syl3anc 1366 | . 2 ⊢ ((𝐾 ∈ AtLat ∧ 𝑋 ∈ 𝐵) → ((𝑋 ≤ 0 ∧ 0 ≤ 𝑋) ↔ 𝑋 = 0 )) |
13 | 5, 12 | bitrd 268 | 1 ⊢ ((𝐾 ∈ AtLat ∧ 𝑋 ∈ 𝐵) → (𝑋 ≤ 0 ↔ 𝑋 = 0 )) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 196 ∧ wa 383 = wceq 1523 ∈ wcel 2030 class class class wbr 4685 ‘cfv 5926 Basecbs 15904 lecple 15995 Posetcpo 16987 0.cp0 17084 AtLatcal 34869 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1762 ax-4 1777 ax-5 1879 ax-6 1945 ax-7 1981 ax-8 2032 ax-9 2039 ax-10 2059 ax-11 2074 ax-12 2087 ax-13 2282 ax-ext 2631 ax-rep 4804 ax-sep 4814 ax-nul 4822 ax-pow 4873 ax-pr 4936 |
This theorem depends on definitions: df-bi 197 df-or 384 df-an 385 df-3an 1056 df-tru 1526 df-ex 1745 df-nf 1750 df-sb 1938 df-eu 2502 df-mo 2503 df-clab 2638 df-cleq 2644 df-clel 2647 df-nfc 2782 df-ne 2824 df-ral 2946 df-rex 2947 df-reu 2948 df-rab 2950 df-v 3233 df-sbc 3469 df-csb 3567 df-dif 3610 df-un 3612 df-in 3614 df-ss 3621 df-nul 3949 df-if 4120 df-pw 4193 df-sn 4211 df-pr 4213 df-op 4217 df-uni 4469 df-iun 4554 df-br 4686 df-opab 4746 df-mpt 4763 df-id 5053 df-xp 5149 df-rel 5150 df-cnv 5151 df-co 5152 df-dm 5153 df-rn 5154 df-res 5155 df-ima 5156 df-iota 5889 df-fun 5928 df-fn 5929 df-f 5930 df-f1 5931 df-fo 5932 df-f1o 5933 df-fv 5934 df-riota 6651 df-preset 16975 df-poset 16993 df-glb 17022 df-p0 17086 df-lat 17093 df-atl 34903 |
This theorem is referenced by: dia0 36658 |
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