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Mirrors > Home > MPE Home > Th. List > Mathboxes > dgraa0p | Structured version Visualization version GIF version |
Description: A rational polynomial of degree less than an algebraic number cannot be zero at that number unless it is the zero polynomial. (Contributed by Stefan O'Rear, 25-Nov-2014.) |
Ref | Expression |
---|---|
dgraa0p | ⊢ ((𝐴 ∈ 𝔸 ∧ 𝑃 ∈ (Poly‘ℚ) ∧ (deg‘𝑃) < (degAA‘𝐴)) → ((𝑃‘𝐴) = 0 ↔ 𝑃 = 0𝑝)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | simpl3 1191 | . . . . . 6 ⊢ (((𝐴 ∈ 𝔸 ∧ 𝑃 ∈ (Poly‘ℚ) ∧ (deg‘𝑃) < (degAA‘𝐴)) ∧ 𝑃 ≠ 0𝑝) → (deg‘𝑃) < (degAA‘𝐴)) | |
2 | simpl2 1190 | . . . . . . . . 9 ⊢ (((𝐴 ∈ 𝔸 ∧ 𝑃 ∈ (Poly‘ℚ) ∧ (deg‘𝑃) < (degAA‘𝐴)) ∧ 𝑃 ≠ 0𝑝) → 𝑃 ∈ (Poly‘ℚ)) | |
3 | dgrcl 25299 | . . . . . . . . 9 ⊢ (𝑃 ∈ (Poly‘ℚ) → (deg‘𝑃) ∈ ℕ0) | |
4 | 2, 3 | syl 17 | . . . . . . . 8 ⊢ (((𝐴 ∈ 𝔸 ∧ 𝑃 ∈ (Poly‘ℚ) ∧ (deg‘𝑃) < (degAA‘𝐴)) ∧ 𝑃 ≠ 0𝑝) → (deg‘𝑃) ∈ ℕ0) |
5 | 4 | nn0red 12224 | . . . . . . 7 ⊢ (((𝐴 ∈ 𝔸 ∧ 𝑃 ∈ (Poly‘ℚ) ∧ (deg‘𝑃) < (degAA‘𝐴)) ∧ 𝑃 ≠ 0𝑝) → (deg‘𝑃) ∈ ℝ) |
6 | simpl1 1189 | . . . . . . . . 9 ⊢ (((𝐴 ∈ 𝔸 ∧ 𝑃 ∈ (Poly‘ℚ) ∧ (deg‘𝑃) < (degAA‘𝐴)) ∧ 𝑃 ≠ 0𝑝) → 𝐴 ∈ 𝔸) | |
7 | dgraacl 40887 | . . . . . . . . 9 ⊢ (𝐴 ∈ 𝔸 → (degAA‘𝐴) ∈ ℕ) | |
8 | 6, 7 | syl 17 | . . . . . . . 8 ⊢ (((𝐴 ∈ 𝔸 ∧ 𝑃 ∈ (Poly‘ℚ) ∧ (deg‘𝑃) < (degAA‘𝐴)) ∧ 𝑃 ≠ 0𝑝) → (degAA‘𝐴) ∈ ℕ) |
9 | 8 | nnred 11918 | . . . . . . 7 ⊢ (((𝐴 ∈ 𝔸 ∧ 𝑃 ∈ (Poly‘ℚ) ∧ (deg‘𝑃) < (degAA‘𝐴)) ∧ 𝑃 ≠ 0𝑝) → (degAA‘𝐴) ∈ ℝ) |
10 | 5, 9 | ltnled 11052 | . . . . . 6 ⊢ (((𝐴 ∈ 𝔸 ∧ 𝑃 ∈ (Poly‘ℚ) ∧ (deg‘𝑃) < (degAA‘𝐴)) ∧ 𝑃 ≠ 0𝑝) → ((deg‘𝑃) < (degAA‘𝐴) ↔ ¬ (degAA‘𝐴) ≤ (deg‘𝑃))) |
11 | 1, 10 | mpbid 231 | . . . . 5 ⊢ (((𝐴 ∈ 𝔸 ∧ 𝑃 ∈ (Poly‘ℚ) ∧ (deg‘𝑃) < (degAA‘𝐴)) ∧ 𝑃 ≠ 0𝑝) → ¬ (degAA‘𝐴) ≤ (deg‘𝑃)) |
12 | simpl2 1190 | . . . . . . 7 ⊢ (((𝐴 ∈ 𝔸 ∧ 𝑃 ∈ (Poly‘ℚ) ∧ (deg‘𝑃) < (degAA‘𝐴)) ∧ (𝑃 ≠ 0𝑝 ∧ (𝑃‘𝐴) = 0)) → 𝑃 ∈ (Poly‘ℚ)) | |
13 | simprl 767 | . . . . . . 7 ⊢ (((𝐴 ∈ 𝔸 ∧ 𝑃 ∈ (Poly‘ℚ) ∧ (deg‘𝑃) < (degAA‘𝐴)) ∧ (𝑃 ≠ 0𝑝 ∧ (𝑃‘𝐴) = 0)) → 𝑃 ≠ 0𝑝) | |
14 | simpl1 1189 | . . . . . . . 8 ⊢ (((𝐴 ∈ 𝔸 ∧ 𝑃 ∈ (Poly‘ℚ) ∧ (deg‘𝑃) < (degAA‘𝐴)) ∧ (𝑃 ≠ 0𝑝 ∧ (𝑃‘𝐴) = 0)) → 𝐴 ∈ 𝔸) | |
15 | aacn 25382 | . . . . . . . 8 ⊢ (𝐴 ∈ 𝔸 → 𝐴 ∈ ℂ) | |
16 | 14, 15 | syl 17 | . . . . . . 7 ⊢ (((𝐴 ∈ 𝔸 ∧ 𝑃 ∈ (Poly‘ℚ) ∧ (deg‘𝑃) < (degAA‘𝐴)) ∧ (𝑃 ≠ 0𝑝 ∧ (𝑃‘𝐴) = 0)) → 𝐴 ∈ ℂ) |
17 | simprr 769 | . . . . . . 7 ⊢ (((𝐴 ∈ 𝔸 ∧ 𝑃 ∈ (Poly‘ℚ) ∧ (deg‘𝑃) < (degAA‘𝐴)) ∧ (𝑃 ≠ 0𝑝 ∧ (𝑃‘𝐴) = 0)) → (𝑃‘𝐴) = 0) | |
18 | dgraaub 40889 | . . . . . . 7 ⊢ (((𝑃 ∈ (Poly‘ℚ) ∧ 𝑃 ≠ 0𝑝) ∧ (𝐴 ∈ ℂ ∧ (𝑃‘𝐴) = 0)) → (degAA‘𝐴) ≤ (deg‘𝑃)) | |
19 | 12, 13, 16, 17, 18 | syl22anc 835 | . . . . . 6 ⊢ (((𝐴 ∈ 𝔸 ∧ 𝑃 ∈ (Poly‘ℚ) ∧ (deg‘𝑃) < (degAA‘𝐴)) ∧ (𝑃 ≠ 0𝑝 ∧ (𝑃‘𝐴) = 0)) → (degAA‘𝐴) ≤ (deg‘𝑃)) |
20 | 19 | expr 456 | . . . . 5 ⊢ (((𝐴 ∈ 𝔸 ∧ 𝑃 ∈ (Poly‘ℚ) ∧ (deg‘𝑃) < (degAA‘𝐴)) ∧ 𝑃 ≠ 0𝑝) → ((𝑃‘𝐴) = 0 → (degAA‘𝐴) ≤ (deg‘𝑃))) |
21 | 11, 20 | mtod 197 | . . . 4 ⊢ (((𝐴 ∈ 𝔸 ∧ 𝑃 ∈ (Poly‘ℚ) ∧ (deg‘𝑃) < (degAA‘𝐴)) ∧ 𝑃 ≠ 0𝑝) → ¬ (𝑃‘𝐴) = 0) |
22 | 21 | ex 412 | . . 3 ⊢ ((𝐴 ∈ 𝔸 ∧ 𝑃 ∈ (Poly‘ℚ) ∧ (deg‘𝑃) < (degAA‘𝐴)) → (𝑃 ≠ 0𝑝 → ¬ (𝑃‘𝐴) = 0)) |
23 | 22 | necon4ad 2961 | . 2 ⊢ ((𝐴 ∈ 𝔸 ∧ 𝑃 ∈ (Poly‘ℚ) ∧ (deg‘𝑃) < (degAA‘𝐴)) → ((𝑃‘𝐴) = 0 → 𝑃 = 0𝑝)) |
24 | 0pval 24740 | . . . . 5 ⊢ (𝐴 ∈ ℂ → (0𝑝‘𝐴) = 0) | |
25 | 15, 24 | syl 17 | . . . 4 ⊢ (𝐴 ∈ 𝔸 → (0𝑝‘𝐴) = 0) |
26 | fveq1 6755 | . . . . 5 ⊢ (𝑃 = 0𝑝 → (𝑃‘𝐴) = (0𝑝‘𝐴)) | |
27 | 26 | eqeq1d 2740 | . . . 4 ⊢ (𝑃 = 0𝑝 → ((𝑃‘𝐴) = 0 ↔ (0𝑝‘𝐴) = 0)) |
28 | 25, 27 | syl5ibrcom 246 | . . 3 ⊢ (𝐴 ∈ 𝔸 → (𝑃 = 0𝑝 → (𝑃‘𝐴) = 0)) |
29 | 28 | 3ad2ant1 1131 | . 2 ⊢ ((𝐴 ∈ 𝔸 ∧ 𝑃 ∈ (Poly‘ℚ) ∧ (deg‘𝑃) < (degAA‘𝐴)) → (𝑃 = 0𝑝 → (𝑃‘𝐴) = 0)) |
30 | 23, 29 | impbid 211 | 1 ⊢ ((𝐴 ∈ 𝔸 ∧ 𝑃 ∈ (Poly‘ℚ) ∧ (deg‘𝑃) < (degAA‘𝐴)) → ((𝑃‘𝐴) = 0 ↔ 𝑃 = 0𝑝)) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 205 ∧ wa 395 ∧ w3a 1085 = wceq 1539 ∈ wcel 2108 ≠ wne 2942 class class class wbr 5070 ‘cfv 6418 ℂcc 10800 0cc0 10802 < clt 10940 ≤ cle 10941 ℕcn 11903 ℕ0cn0 12163 ℚcq 12617 0𝑝c0p 24738 Polycply 25250 degcdgr 25253 𝔸caa 25379 degAAcdgraa 40881 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-rep 5205 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-inf2 9329 ax-cnex 10858 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-mulcom 10866 ax-addass 10867 ax-mulass 10868 ax-distr 10869 ax-i2m1 10870 ax-1ne0 10871 ax-1rid 10872 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 ax-pre-mulgt0 10879 ax-pre-sup 10880 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-reu 3070 df-rmo 3071 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-int 4877 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-se 5536 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-isom 6427 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-of 7511 df-om 7688 df-1st 7804 df-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-1o 8267 df-er 8456 df-map 8575 df-pm 8576 df-en 8692 df-dom 8693 df-sdom 8694 df-fin 8695 df-sup 9131 df-inf 9132 df-oi 9199 df-card 9628 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-div 11563 df-nn 11904 df-2 11966 df-3 11967 df-n0 12164 df-z 12250 df-uz 12512 df-q 12618 df-rp 12660 df-fz 13169 df-fzo 13312 df-fl 13440 df-mod 13518 df-seq 13650 df-exp 13711 df-hash 13973 df-cj 14738 df-re 14739 df-im 14740 df-sqrt 14874 df-abs 14875 df-clim 15125 df-rlim 15126 df-sum 15326 df-0p 24739 df-ply 25254 df-coe 25256 df-dgr 25257 df-aa 25380 df-dgraa 40883 |
This theorem is referenced by: mpaaeu 40891 |
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