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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 39446 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 39446 | . . . . 5 ⊢ ((𝐾 ∈ OP ∧ 𝑌 ∈ 𝐵) → 0 ≤ 𝑌) |
| 5 | 4 | 3adant2 1131 | . . . 4 ⊢ ((𝐾 ∈ OP ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → 0 ≤ 𝑌) |
| 6 | breq1 5101 | . . . 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 1086 = wceq 1541 ∈ wcel 2113 ≠ wne 2932 class class class wbr 5098 ‘cfv 6492 Basecbs 17136 lecple 17184 0.cp0 18344 OPcops 39432 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2184 ax-ext 2708 ax-rep 5224 ax-sep 5241 ax-nul 5251 ax-pow 5310 ax-pr 5377 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 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 3061 df-rmo 3350 df-reu 3351 df-rab 3400 df-v 3442 df-sbc 3741 df-csb 3850 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4581 df-pr 4583 df-op 4587 df-uni 4864 df-iun 4948 df-br 5099 df-opab 5161 df-mpt 5180 df-id 5519 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-riota 7315 df-ov 7361 df-glb 18268 df-p0 18346 df-oposet 39436 |
| This theorem is referenced by: cdlemg12e 40907 |
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