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Mirrors > Home > MPE Home > Th. List > deg1ldgn | Structured version Visualization version GIF version |
Description: An index at which a polynomial is zero, cannot be its degree. (Contributed by Stefan O'Rear, 23-Mar-2015.) |
Ref | Expression |
---|---|
deg1z.d | ⊢ 𝐷 = ( deg1 ‘𝑅) |
deg1z.p | ⊢ 𝑃 = (Poly1‘𝑅) |
deg1z.z | ⊢ 0 = (0g‘𝑃) |
deg1nn0cl.b | ⊢ 𝐵 = (Base‘𝑃) |
deg1ldg.y | ⊢ 𝑌 = (0g‘𝑅) |
deg1ldg.a | ⊢ 𝐴 = (coe1‘𝐹) |
deg1ldgn.r | ⊢ (𝜑 → 𝑅 ∈ Ring) |
deg1ldgn.f | ⊢ (𝜑 → 𝐹 ∈ 𝐵) |
deg1ldgn.x | ⊢ (𝜑 → 𝑋 ∈ ℕ0) |
deg1ldgn.e | ⊢ (𝜑 → (𝐴‘𝑋) = 𝑌) |
Ref | Expression |
---|---|
deg1ldgn | ⊢ (𝜑 → (𝐷‘𝐹) ≠ 𝑋) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | deg1ldgn.e | . 2 ⊢ (𝜑 → (𝐴‘𝑋) = 𝑌) | |
2 | fveq2 6774 | . . . . . 6 ⊢ ((𝐷‘𝐹) = 𝑋 → (𝐴‘(𝐷‘𝐹)) = (𝐴‘𝑋)) | |
3 | 2 | adantl 482 | . . . . 5 ⊢ ((𝜑 ∧ (𝐷‘𝐹) = 𝑋) → (𝐴‘(𝐷‘𝐹)) = (𝐴‘𝑋)) |
4 | deg1ldgn.r | . . . . . . 7 ⊢ (𝜑 → 𝑅 ∈ Ring) | |
5 | 4 | adantr 481 | . . . . . 6 ⊢ ((𝜑 ∧ (𝐷‘𝐹) = 𝑋) → 𝑅 ∈ Ring) |
6 | deg1ldgn.f | . . . . . . 7 ⊢ (𝜑 → 𝐹 ∈ 𝐵) | |
7 | 6 | adantr 481 | . . . . . 6 ⊢ ((𝜑 ∧ (𝐷‘𝐹) = 𝑋) → 𝐹 ∈ 𝐵) |
8 | deg1ldgn.x | . . . . . . . . 9 ⊢ (𝜑 → 𝑋 ∈ ℕ0) | |
9 | eleq1a 2834 | . . . . . . . . 9 ⊢ (𝑋 ∈ ℕ0 → ((𝐷‘𝐹) = 𝑋 → (𝐷‘𝐹) ∈ ℕ0)) | |
10 | 8, 9 | syl 17 | . . . . . . . 8 ⊢ (𝜑 → ((𝐷‘𝐹) = 𝑋 → (𝐷‘𝐹) ∈ ℕ0)) |
11 | 10 | imp 407 | . . . . . . 7 ⊢ ((𝜑 ∧ (𝐷‘𝐹) = 𝑋) → (𝐷‘𝐹) ∈ ℕ0) |
12 | deg1z.d | . . . . . . . . . 10 ⊢ 𝐷 = ( deg1 ‘𝑅) | |
13 | deg1z.p | . . . . . . . . . 10 ⊢ 𝑃 = (Poly1‘𝑅) | |
14 | deg1z.z | . . . . . . . . . 10 ⊢ 0 = (0g‘𝑃) | |
15 | deg1nn0cl.b | . . . . . . . . . 10 ⊢ 𝐵 = (Base‘𝑃) | |
16 | 12, 13, 14, 15 | deg1nn0clb 25255 | . . . . . . . . 9 ⊢ ((𝑅 ∈ Ring ∧ 𝐹 ∈ 𝐵) → (𝐹 ≠ 0 ↔ (𝐷‘𝐹) ∈ ℕ0)) |
17 | 4, 6, 16 | syl2anc 584 | . . . . . . . 8 ⊢ (𝜑 → (𝐹 ≠ 0 ↔ (𝐷‘𝐹) ∈ ℕ0)) |
18 | 17 | adantr 481 | . . . . . . 7 ⊢ ((𝜑 ∧ (𝐷‘𝐹) = 𝑋) → (𝐹 ≠ 0 ↔ (𝐷‘𝐹) ∈ ℕ0)) |
19 | 11, 18 | mpbird 256 | . . . . . 6 ⊢ ((𝜑 ∧ (𝐷‘𝐹) = 𝑋) → 𝐹 ≠ 0 ) |
20 | deg1ldg.y | . . . . . . 7 ⊢ 𝑌 = (0g‘𝑅) | |
21 | deg1ldg.a | . . . . . . 7 ⊢ 𝐴 = (coe1‘𝐹) | |
22 | 12, 13, 14, 15, 20, 21 | deg1ldg 25257 | . . . . . 6 ⊢ ((𝑅 ∈ Ring ∧ 𝐹 ∈ 𝐵 ∧ 𝐹 ≠ 0 ) → (𝐴‘(𝐷‘𝐹)) ≠ 𝑌) |
23 | 5, 7, 19, 22 | syl3anc 1370 | . . . . 5 ⊢ ((𝜑 ∧ (𝐷‘𝐹) = 𝑋) → (𝐴‘(𝐷‘𝐹)) ≠ 𝑌) |
24 | 3, 23 | eqnetrrd 3012 | . . . 4 ⊢ ((𝜑 ∧ (𝐷‘𝐹) = 𝑋) → (𝐴‘𝑋) ≠ 𝑌) |
25 | 24 | ex 413 | . . 3 ⊢ (𝜑 → ((𝐷‘𝐹) = 𝑋 → (𝐴‘𝑋) ≠ 𝑌)) |
26 | 25 | necon2d 2966 | . 2 ⊢ (𝜑 → ((𝐴‘𝑋) = 𝑌 → (𝐷‘𝐹) ≠ 𝑋)) |
27 | 1, 26 | mpd 15 | 1 ⊢ (𝜑 → (𝐷‘𝐹) ≠ 𝑋) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 396 = wceq 1539 ∈ wcel 2106 ≠ wne 2943 ‘cfv 6433 ℕ0cn0 12233 Basecbs 16912 0gc0g 17150 Ringcrg 19783 Poly1cpl1 21348 coe1cco1 21349 deg1 cdg1 25216 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-rep 5209 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-cnex 10927 ax-resscn 10928 ax-1cn 10929 ax-icn 10930 ax-addcl 10931 ax-addrcl 10932 ax-mulcl 10933 ax-mulrcl 10934 ax-mulcom 10935 ax-addass 10936 ax-mulass 10937 ax-distr 10938 ax-i2m1 10939 ax-1ne0 10940 ax-1rid 10941 ax-rnegex 10942 ax-rrecex 10943 ax-cnre 10944 ax-pre-lttri 10945 ax-pre-lttrn 10946 ax-pre-ltadd 10947 ax-pre-mulgt0 10948 ax-addf 10950 ax-mulf 10951 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-rmo 3071 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-tp 4566 df-op 4568 df-uni 4840 df-int 4880 df-iun 4926 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5489 df-eprel 5495 df-po 5503 df-so 5504 df-fr 5544 df-se 5545 df-we 5546 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-pred 6202 df-ord 6269 df-on 6270 df-lim 6271 df-suc 6272 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-isom 6442 df-riota 7232 df-ov 7278 df-oprab 7279 df-mpo 7280 df-of 7533 df-om 7713 df-1st 7831 df-2nd 7832 df-supp 7978 df-frecs 8097 df-wrecs 8128 df-recs 8202 df-rdg 8241 df-1o 8297 df-er 8498 df-map 8617 df-en 8734 df-dom 8735 df-sdom 8736 df-fin 8737 df-fsupp 9129 df-sup 9201 df-oi 9269 df-card 9697 df-pnf 11011 df-mnf 11012 df-xr 11013 df-ltxr 11014 df-le 11015 df-sub 11207 df-neg 11208 df-nn 11974 df-2 12036 df-3 12037 df-4 12038 df-5 12039 df-6 12040 df-7 12041 df-8 12042 df-9 12043 df-n0 12234 df-z 12320 df-dec 12438 df-uz 12583 df-fz 13240 df-fzo 13383 df-seq 13722 df-hash 14045 df-struct 16848 df-sets 16865 df-slot 16883 df-ndx 16895 df-base 16913 df-ress 16942 df-plusg 16975 df-mulr 16976 df-starv 16977 df-sca 16978 df-vsca 16979 df-tset 16981 df-ple 16982 df-ds 16984 df-unif 16985 df-0g 17152 df-gsum 17153 df-mgm 18326 df-sgrp 18375 df-mnd 18386 df-submnd 18431 df-grp 18580 df-minusg 18581 df-mulg 18701 df-subg 18752 df-cntz 18923 df-cmn 19388 df-abl 19389 df-mgp 19721 df-ur 19738 df-ring 19785 df-cring 19786 df-cnfld 20598 df-psr 21112 df-mpl 21114 df-opsr 21116 df-psr1 21351 df-ply1 21353 df-coe1 21354 df-mdeg 25217 df-deg1 25218 |
This theorem is referenced by: deg1sublt 25275 |
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