| Mathbox for Glauco Siliprandi |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > n0p | Structured version Visualization version GIF version | ||
| Description: A polynomial with a nonzero coefficient is not the zero polynomial. (Contributed by Glauco Siliprandi, 5-Apr-2020.) |
| Ref | Expression |
|---|---|
| n0p | ⊢ ((𝑃 ∈ (Poly‘ℤ) ∧ 𝑁 ∈ ℕ0 ∧ ((coeff‘𝑃)‘𝑁) ≠ 0) → 𝑃 ≠ 0𝑝) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fveq2 6867 | . . . . . . . 8 ⊢ (𝑃 = 0𝑝 → (coeff‘𝑃) = (coeff‘0𝑝)) | |
| 2 | coe0 26323 | . . . . . . . . 9 ⊢ (coeff‘0𝑝) = (ℕ0 × {0}) | |
| 3 | 2 | a1i 11 | . . . . . . . 8 ⊢ (𝑃 = 0𝑝 → (coeff‘0𝑝) = (ℕ0 × {0})) |
| 4 | 1, 3 | eqtrd 2798 | . . . . . . 7 ⊢ (𝑃 = 0𝑝 → (coeff‘𝑃) = (ℕ0 × {0})) |
| 5 | 4 | fveq1d 6869 | . . . . . 6 ⊢ (𝑃 = 0𝑝 → ((coeff‘𝑃)‘𝑁) = ((ℕ0 × {0})‘𝑁)) |
| 6 | 5 | adantl 485 | . . . . 5 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑃 = 0𝑝) → ((coeff‘𝑃)‘𝑁) = ((ℕ0 × {0})‘𝑁)) |
| 7 | id 22 | . . . . . . 7 ⊢ (𝑁 ∈ ℕ0 → 𝑁 ∈ ℕ0) | |
| 8 | c0ex 11184 | . . . . . . . 8 ⊢ 0 ∈ V | |
| 9 | 8 | fvconst2 7188 | . . . . . . 7 ⊢ (𝑁 ∈ ℕ0 → ((ℕ0 × {0})‘𝑁) = 0) |
| 10 | 7, 9 | syl 17 | . . . . . 6 ⊢ (𝑁 ∈ ℕ0 → ((ℕ0 × {0})‘𝑁) = 0) |
| 11 | 10 | adantr 484 | . . . . 5 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑃 = 0𝑝) → ((ℕ0 × {0})‘𝑁) = 0) |
| 12 | 6, 11 | eqtrd 2798 | . . . 4 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑃 = 0𝑝) → ((coeff‘𝑃)‘𝑁) = 0) |
| 13 | 12 | 3ad2antl2 1201 | . . 3 ⊢ (((𝑃 ∈ (Poly‘ℤ) ∧ 𝑁 ∈ ℕ0 ∧ ((coeff‘𝑃)‘𝑁) ≠ 0) ∧ 𝑃 = 0𝑝) → ((coeff‘𝑃)‘𝑁) = 0) |
| 14 | neneq 2964 | . . . . 5 ⊢ (((coeff‘𝑃)‘𝑁) ≠ 0 → ¬ ((coeff‘𝑃)‘𝑁) = 0) | |
| 15 | 14 | adantr 484 | . . . 4 ⊢ ((((coeff‘𝑃)‘𝑁) ≠ 0 ∧ 𝑃 = 0𝑝) → ¬ ((coeff‘𝑃)‘𝑁) = 0) |
| 16 | 15 | 3ad2antl3 1202 | . . 3 ⊢ (((𝑃 ∈ (Poly‘ℤ) ∧ 𝑁 ∈ ℕ0 ∧ ((coeff‘𝑃)‘𝑁) ≠ 0) ∧ 𝑃 = 0𝑝) → ¬ ((coeff‘𝑃)‘𝑁) = 0) |
| 17 | 13, 16 | pm2.65da 826 | . 2 ⊢ ((𝑃 ∈ (Poly‘ℤ) ∧ 𝑁 ∈ ℕ0 ∧ ((coeff‘𝑃)‘𝑁) ≠ 0) → ¬ 𝑃 = 0𝑝) |
| 18 | 17 | neqned 2965 | 1 ⊢ ((𝑃 ∈ (Poly‘ℤ) ∧ 𝑁 ∈ ℕ0 ∧ ((coeff‘𝑃)‘𝑁) ≠ 0) → 𝑃 ≠ 0𝑝) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ∧ wa 399 ∧ w3a 1099 = wceq 1561 ∈ wcel 2143 ≠ wne 2958 {csn 4583 × cxp 5646 ‘cfv 6521 0cc0 11084 ℕ0cn0 12491 ℤcz 12578 0𝑝c0p 25738 Polycply 26251 coeffccoe 26253 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1816 ax-4 1830 ax-5 1931 ax-6 1988 ax-7 2029 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-rep 5228 ax-sep 5247 ax-nul 5257 ax-pow 5323 ax-pr 5391 ax-un 7718 ax-inf2 9594 ax-cnex 11140 ax-resscn 11141 ax-1cn 11142 ax-icn 11143 ax-addcl 11144 ax-addrcl 11145 ax-mulcl 11146 ax-mulrcl 11147 ax-mulcom 11148 ax-addass 11149 ax-mulass 11150 ax-distr 11151 ax-i2m1 11152 ax-1ne0 11153 ax-1rid 11154 ax-rnegex 11155 ax-rrecex 11156 ax-cnre 11157 ax-pre-lttri 11158 ax-pre-lttrn 11159 ax-pre-ltadd 11160 ax-pre-mulgt0 11161 ax-pre-sup 11162 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1100 df-3an 1101 df-tru 1564 df-fal 1574 df-ex 1801 df-nf 1805 df-sb 2092 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-nel 3063 df-ral 3078 df-rex 3088 df-rmo 3368 df-reu 3369 df-rab 3416 df-v 3457 df-sbc 3746 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-pss 3925 df-nul 4287 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-int 4907 df-iun 4952 df-br 5102 df-opab 5164 df-mpt 5183 df-tr 5209 df-id 5543 df-eprel 5548 df-po 5556 df-so 5557 df-fr 5601 df-se 5602 df-we 5603 df-xp 5654 df-rel 5655 df-cnv 5656 df-co 5657 df-dm 5658 df-rn 5659 df-res 5660 df-ima 5661 df-pred 6288 df-ord 6349 df-on 6350 df-lim 6351 df-suc 6352 df-iota 6477 df-fun 6523 df-fn 6524 df-f 6525 df-f1 6526 df-fo 6527 df-f1o 6528 df-fv 6529 df-isom 6530 df-riota 7353 df-ov 7399 df-oprab 7400 df-mpo 7401 df-of 7660 df-om 7847 df-1st 7970 df-2nd 7971 df-frecs 8262 df-wrecs 8293 df-recs 8342 df-rdg 8381 df-1o 8437 df-er 8678 df-map 8810 df-pm 8811 df-en 8928 df-dom 8929 df-sdom 8930 df-fin 8931 df-sup 9386 df-inf 9387 df-oi 9456 df-card 9909 df-pnf 11229 df-mnf 11230 df-xr 11231 df-ltxr 11232 df-le 11233 df-sub 11427 df-neg 11428 df-div 11856 df-nn 12221 df-2 12290 df-3 12291 df-n0 12492 df-z 12579 df-uz 12850 df-rp 13004 df-fz 13523 df-fzo 13670 df-fl 13812 df-seq 14025 df-exp 14085 df-hash 14354 df-cj 15136 df-re 15137 df-im 15138 df-sqrt 15272 df-abs 15273 df-clim 15525 df-rlim 15526 df-sum 15724 df-0p 25739 df-ply 26255 df-coe 26257 df-dgr 26258 |
| This theorem is referenced by: etransc 46848 |
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