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| Mirrors > Home > MPE Home > Th. List > coe1mul4 | Structured version Visualization version GIF version | ||
| Description: Value of the "leading" coefficient of a product of two nonzero polynomials. This will fail to actually be the leading coefficient only if it is zero (requiring the basic ring to contain zero divisors). (Contributed by Stefan O'Rear, 25-Mar-2015.) |
| Ref | Expression |
|---|---|
| coe1mul3.s | ⊢ 𝑌 = (Poly1‘𝑅) |
| coe1mul3.t | ⊢ ∙ = (.r‘𝑌) |
| coe1mul3.u | ⊢ · = (.r‘𝑅) |
| coe1mul3.b | ⊢ 𝐵 = (Base‘𝑌) |
| coe1mul3.d | ⊢ 𝐷 = (deg1‘𝑅) |
| coe1mul4.z | ⊢ 0 = (0g‘𝑌) |
| coe1mul4.r | ⊢ (𝜑 → 𝑅 ∈ Ring) |
| coe1mul4.f1 | ⊢ (𝜑 → 𝐹 ∈ 𝐵) |
| coe1mul4.f2 | ⊢ (𝜑 → 𝐹 ≠ 0 ) |
| coe1mul4.g1 | ⊢ (𝜑 → 𝐺 ∈ 𝐵) |
| coe1mul4.g2 | ⊢ (𝜑 → 𝐺 ≠ 0 ) |
| Ref | Expression |
|---|---|
| coe1mul4 | ⊢ (𝜑 → ((coe1‘(𝐹 ∙ 𝐺))‘((𝐷‘𝐹) + (𝐷‘𝐺))) = (((coe1‘𝐹)‘(𝐷‘𝐹)) · ((coe1‘𝐺)‘(𝐷‘𝐺)))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | coe1mul3.s | . 2 ⊢ 𝑌 = (Poly1‘𝑅) | |
| 2 | coe1mul3.t | . 2 ⊢ ∙ = (.r‘𝑌) | |
| 3 | coe1mul3.u | . 2 ⊢ · = (.r‘𝑅) | |
| 4 | coe1mul3.b | . 2 ⊢ 𝐵 = (Base‘𝑌) | |
| 5 | coe1mul3.d | . 2 ⊢ 𝐷 = (deg1‘𝑅) | |
| 6 | coe1mul4.r | . 2 ⊢ (𝜑 → 𝑅 ∈ Ring) | |
| 7 | coe1mul4.f1 | . 2 ⊢ (𝜑 → 𝐹 ∈ 𝐵) | |
| 8 | coe1mul4.f2 | . . 3 ⊢ (𝜑 → 𝐹 ≠ 0 ) | |
| 9 | coe1mul4.z | . . . 4 ⊢ 0 = (0g‘𝑌) | |
| 10 | 5, 1, 9, 4 | deg1nn0cl 26071 | . . 3 ⊢ ((𝑅 ∈ Ring ∧ 𝐹 ∈ 𝐵 ∧ 𝐹 ≠ 0 ) → (𝐷‘𝐹) ∈ ℕ0) |
| 11 | 6, 7, 8, 10 | syl3anc 1379 | . 2 ⊢ (𝜑 → (𝐷‘𝐹) ∈ ℕ0) |
| 12 | 11 | nn0red 12490 | . . 3 ⊢ (𝜑 → (𝐷‘𝐹) ∈ ℝ) |
| 13 | 12 | leidd 11707 | . 2 ⊢ (𝜑 → (𝐷‘𝐹) ≤ (𝐷‘𝐹)) |
| 14 | coe1mul4.g1 | . 2 ⊢ (𝜑 → 𝐺 ∈ 𝐵) | |
| 15 | coe1mul4.g2 | . . 3 ⊢ (𝜑 → 𝐺 ≠ 0 ) | |
| 16 | 5, 1, 9, 4 | deg1nn0cl 26071 | . . 3 ⊢ ((𝑅 ∈ Ring ∧ 𝐺 ∈ 𝐵 ∧ 𝐺 ≠ 0 ) → (𝐷‘𝐺) ∈ ℕ0) |
| 17 | 6, 14, 15, 16 | syl3anc 1379 | . 2 ⊢ (𝜑 → (𝐷‘𝐺) ∈ ℕ0) |
| 18 | 17 | nn0red 12490 | . . 3 ⊢ (𝜑 → (𝐷‘𝐺) ∈ ℝ) |
| 19 | 18 | leidd 11707 | . 2 ⊢ (𝜑 → (𝐷‘𝐺) ≤ (𝐷‘𝐺)) |
| 20 | 1, 2, 3, 4, 5, 6, 7, 11, 13, 14, 17, 19 | coe1mul3 26082 | 1 ⊢ (𝜑 → ((coe1‘(𝐹 ∙ 𝐺))‘((𝐷‘𝐹) + (𝐷‘𝐺))) = (((coe1‘𝐹)‘(𝐷‘𝐹)) · ((coe1‘𝐺)‘(𝐷‘𝐺)))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1547 ∈ wcel 2119 ≠ wne 2934 ‘cfv 6485 (class class class)co 7356 + caddc 11032 ℕ0cn0 12428 Basecbs 17170 .rcmulr 17212 0gc0g 17393 Ringcrg 20205 Poly1cpl1 22162 coe1cco1 22163 deg1cdg1 26037 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2711 ax-rep 5199 ax-sep 5218 ax-nul 5228 ax-pow 5294 ax-pr 5362 ax-un 7678 ax-cnex 11085 ax-resscn 11086 ax-1cn 11087 ax-icn 11088 ax-addcl 11089 ax-addrcl 11090 ax-mulcl 11091 ax-mulrcl 11092 ax-mulcom 11093 ax-addass 11094 ax-mulass 11095 ax-distr 11096 ax-i2m1 11097 ax-1ne0 11098 ax-1rid 11099 ax-rnegex 11100 ax-rrecex 11101 ax-cnre 11102 ax-pre-lttri 11103 ax-pre-lttrn 11104 ax-pre-ltadd 11105 ax-pre-mulgt0 11106 ax-pre-sup 11107 ax-addf 11108 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2718 df-cleq 2731 df-clel 2814 df-nfc 2888 df-ne 2935 df-nel 3039 df-ral 3054 df-rex 3064 df-rmo 3344 df-reu 3345 df-rab 3392 df-v 3433 df-sbc 3724 df-csb 3832 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3903 df-nul 4262 df-if 4455 df-pw 4531 df-sn 4556 df-pr 4558 df-tp 4560 df-op 4562 df-uni 4839 df-int 4878 df-iun 4923 df-iin 4924 df-br 5073 df-opab 5135 df-mpt 5154 df-tr 5180 df-id 5513 df-eprel 5518 df-po 5526 df-so 5527 df-fr 5571 df-se 5572 df-we 5573 df-xp 5624 df-rel 5625 df-cnv 5626 df-co 5627 df-dm 5628 df-rn 5629 df-res 5630 df-ima 5631 df-pred 6252 df-ord 6313 df-on 6314 df-lim 6315 df-suc 6316 df-iota 6441 df-fun 6487 df-fn 6488 df-f 6489 df-f1 6490 df-fo 6491 df-f1o 6492 df-fv 6493 df-isom 6494 df-riota 7313 df-ov 7359 df-oprab 7360 df-mpo 7361 df-of 7620 df-ofr 7621 df-om 7807 df-1st 7931 df-2nd 7932 df-supp 8101 df-frecs 8221 df-wrecs 8252 df-recs 8301 df-rdg 8339 df-1o 8395 df-2o 8396 df-er 8633 df-map 8765 df-pm 8766 df-ixp 8836 df-en 8884 df-dom 8885 df-sdom 8886 df-fin 8887 df-fsupp 9265 df-sup 9345 df-oi 9415 df-card 9854 df-pnf 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-sub 11370 df-neg 11371 df-nn 12166 df-2 12235 df-3 12236 df-4 12237 df-5 12238 df-6 12239 df-7 12240 df-8 12241 df-9 12242 df-n0 12429 df-z 12516 df-dec 12636 df-uz 12780 df-fz 13453 df-fzo 13600 df-seq 13955 df-hash 14284 df-struct 17108 df-sets 17125 df-slot 17143 df-ndx 17155 df-base 17171 df-ress 17192 df-plusg 17224 df-mulr 17225 df-starv 17226 df-sca 17227 df-vsca 17228 df-ip 17229 df-tset 17230 df-ple 17231 df-ds 17233 df-unif 17234 df-hom 17235 df-cco 17236 df-0g 17395 df-gsum 17396 df-prds 17401 df-pws 17403 df-mre 17539 df-mrc 17540 df-acs 17542 df-mgm 18599 df-sgrp 18678 df-mnd 18694 df-mhm 18742 df-submnd 18743 df-grp 18903 df-minusg 18904 df-mulg 19035 df-subg 19090 df-ghm 19179 df-cntz 19283 df-cmn 19748 df-abl 19749 df-mgp 20113 df-rng 20125 df-ur 20154 df-ring 20207 df-cring 20208 df-cnfld 21348 df-psr 21884 df-mpl 21886 df-opsr 21888 df-psr1 22165 df-ply1 22167 df-coe1 22168 df-mdeg 26038 df-deg1 26039 |
| This theorem is referenced by: deg1mul2 26097 m1pmeq 33668 mon1psubm 43644 |
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