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| Mirrors > Home > MPE Home > Th. List > ne0p | Structured version Visualization version GIF version | ||
| Description: A test to show that a polynomial is nonzero. (Contributed by Mario Carneiro, 23-Jul-2014.) |
| Ref | Expression |
|---|---|
| ne0p | ⊢ ((𝐴 ∈ ℂ ∧ (𝐹‘𝐴) ≠ 0) → 𝐹 ≠ 0𝑝) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 0pval 25626 | . . . 4 ⊢ (𝐴 ∈ ℂ → (0𝑝‘𝐴) = 0) | |
| 2 | fveq1 6828 | . . . . 5 ⊢ (𝐹 = 0𝑝 → (𝐹‘𝐴) = (0𝑝‘𝐴)) | |
| 3 | 2 | eqeq1d 2737 | . . . 4 ⊢ (𝐹 = 0𝑝 → ((𝐹‘𝐴) = 0 ↔ (0𝑝‘𝐴) = 0)) |
| 4 | 1, 3 | syl5ibrcom 247 | . . 3 ⊢ (𝐴 ∈ ℂ → (𝐹 = 0𝑝 → (𝐹‘𝐴) = 0)) |
| 5 | 4 | necon3d 2951 | . 2 ⊢ (𝐴 ∈ ℂ → ((𝐹‘𝐴) ≠ 0 → 𝐹 ≠ 0𝑝)) |
| 6 | 5 | imp 406 | 1 ⊢ ((𝐴 ∈ ℂ ∧ (𝐹‘𝐴) ≠ 0) → 𝐹 ≠ 0𝑝) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1542 ∈ wcel 2114 ≠ wne 2930 ‘cfv 6487 ℂcc 11025 0cc0 11027 0𝑝c0p 25624 |
| 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 2184 ax-ext 2707 ax-sep 5220 ax-nul 5230 ax-pr 5364 ax-1cn 11085 ax-icn 11086 ax-addcl 11087 ax-mulcl 11089 ax-i2m1 11095 |
| 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 2538 df-eu 2568 df-clab 2714 df-cleq 2727 df-clel 2810 df-nfc 2884 df-ne 2931 df-ral 3050 df-rex 3060 df-rab 3388 df-v 3429 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 df-nul 4264 df-if 4457 df-sn 4558 df-pr 4560 df-op 4564 df-uni 4841 df-br 5075 df-opab 5137 df-mpt 5156 df-id 5515 df-xp 5626 df-rel 5627 df-cnv 5628 df-co 5629 df-dm 5630 df-rn 5631 df-iota 6443 df-fun 6489 df-fn 6490 df-f 6491 df-fv 6495 df-0p 25625 |
| This theorem is referenced by: dgrmulc 26224 qaa 26277 iaa 26279 aareccl 26280 dchrfi 27206 nthrucw 47304 cjnpoly 47325 |
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