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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 2946 and op0le 39632 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 39632 | . . . . 5 ⊢ ((𝐾 ∈ OP ∧ 𝑌 ∈ 𝐵) → 0 ≤ 𝑌) |
| 5 | 4 | 3adant2 1132 | . . . 4 ⊢ ((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → 0 ≤ 𝑌) |
| 6 | breq1 5088 | . . . 4 ⊢ (𝑋 = 0 → (𝑋 ≤ 𝑌 ↔ 0 ≤ 𝑌)) | |
| 7 | 5, 6 | syl5ibrcom 247 | . . 3 ⊢ ((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋 = 0 → 𝑋 ≤ 𝑌)) |
| 8 | 7 | necon3bd 2946 | . 2 ⊢ ((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (¬ 𝑋 ≤ 𝑌 → 𝑋 ≠ 0 )) |
| 9 | 8 | imp 406 | 1 ⊢ (((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ ¬ 𝑋 ≤ 𝑌) → 𝑋 ≠ 0 ) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 ∧ w3a 1087 = wceq 1542 ∈ wcel 2114 ≠ wne 2932 class class class wbr 5085 ‘cfv 6498 Basecbs 17179 lecple 17227 0.cp0 18387 OPcops 39618 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2708 ax-rep 5212 ax-sep 5231 ax-nul 5241 ax-pow 5307 ax-pr 5375 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-ral 3052 df-rex 3062 df-rmo 3342 df-reu 3343 df-rab 3390 df-v 3431 df-sbc 3729 df-csb 3838 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-nul 4274 df-if 4467 df-pw 4543 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-iun 4935 df-br 5086 df-opab 5148 df-mpt 5167 df-id 5526 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-iota 6454 df-fun 6500 df-fn 6501 df-f 6502 df-f1 6503 df-fo 6504 df-f1o 6505 df-fv 6506 df-riota 7324 df-ov 7370 df-glb 18311 df-p0 18389 df-oposet 39622 |
| This theorem is referenced by: cdlemg12e 41093 |
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