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| Mirrors > Home > MPE Home > Th. List > Mathboxes > opnlen0 | Structured version Visualization version GIF version | ||
| Description: An element not less than another is nonzero. TODO: Look for uses of necon3bd 2969 and op0le 40059 to see if this is useful elsewhere. (Contributed by NM, 5-May-2013.) |
| Ref | Expression |
|---|---|
| op0le.b | ⊢ 𝐵 = (Base‘𝐾) |
| op0le.l | ⊢ ≤ = (le‘𝐾) |
| op0le.z | ⊢ 0 = (0.‘𝐾) |
| Ref | Expression |
|---|---|
| opnlen0 | ⊢ (((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ ¬ 𝑋 ≤ 𝑌) → 𝑋 ≠ 0 ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | op0le.b | . . . . . 6 ⊢ 𝐵 = (Base‘𝐾) | |
| 2 | op0le.l | . . . . . 6 ⊢ ≤ = (le‘𝐾) | |
| 3 | op0le.z | . . . . . 6 ⊢ 0 = (0.‘𝐾) | |
| 4 | 1, 2, 3 | op0le 40059 | . . . . 5 ⊢ ((𝐾 ∈ OP ∧ 𝑌 ∈ 𝐵) → 0 ≤ 𝑌) |
| 5 | 4 | 3adant2 1149 | . . . 4 ⊢ ((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → 0 ≤ 𝑌) |
| 6 | breq1 5106 | . . . 4 ⊢ (𝑋 = 0 → (𝑋 ≤ 𝑌 ↔ 0 ≤ 𝑌)) | |
| 7 | 5, 6 | syl5ibrcom 250 | . . 3 ⊢ ((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋 = 0 → 𝑋 ≤ 𝑌)) |
| 8 | 7 | necon3bd 2969 | . 2 ⊢ ((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (¬ 𝑋 ≤ 𝑌 → 𝑋 ≠ 0 )) |
| 9 | 8 | imp 412 | 1 ⊢ (((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ ¬ 𝑋 ≤ 𝑌) → 𝑋 ≠ 0 ) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ∧ wa 401 ∧ w3a 1103 = wceq 1570 ∈ wcel 2145 ≠ wne 2955 class class class wbr 5103 ‘cfv 6533 Basecbs 17301 lecple 17349 0.cp0 18509 OPcops 40045 |
| 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 2732 ax-rep 5232 ax-sep 5251 ax-nul 5263 ax-pow 5330 ax-pr 5398 |
| 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 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 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 5550 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-iota 6489 df-fun 6535 df-fn 6536 df-f 6537 df-f1 6538 df-fo 6539 df-f1o 6540 df-fv 6541 df-riota 7370 df-ov 7416 df-glb 18433 df-p0 18511 df-oposet 40049 |
| This theorem is used by: cdlemg12e 41520 |
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