| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > dgrcl | Structured version Visualization version GIF version | ||
| Description: The degree of any polynomial is a nonnegative integer. (Contributed by Mario Carneiro, 22-Jul-2014.) |
| Ref | Expression |
|---|---|
| dgrcl | ⊢ (𝐹 ∈ (Poly‘𝑆) → (deg‘𝐹) ∈ ℕ0) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2763 | . . 3 ⊢ (coeff‘𝐹) = (coeff‘𝐹) | |
| 2 | 1 | dgrval 26580 | . 2 ⊢ (𝐹 ∈ (Poly‘𝑆) → (deg‘𝐹) = sup((◡(coeff‘𝐹) “ (ℂ ∖ {0})), ℕ0, < )) |
| 3 | nn0ssre 12640 | . . . . 5 ⊢ ℕ0 ⊆ ℝ | |
| 4 | ltso 11420 | . . . . 5 ⊢ < Or ℝ | |
| 5 | soss 5584 | . . . . 5 ⊢ (ℕ0 ⊆ ℝ → ( < Or ℝ → < Or ℕ0)) | |
| 6 | 3, 4, 5 | mp2 9 | . . . 4 ⊢ < Or ℕ0 |
| 7 | 6 | a1i 11 | . . 3 ⊢ (𝐹 ∈ (Poly‘𝑆) → < Or ℕ0) |
| 8 | 0zd 12735 | . . . 4 ⊢ (𝐹 ∈ (Poly‘𝑆) → 0 ∈ ℤ) | |
| 9 | cnvimass 6212 | . . . . 5 ⊢ (◡(coeff‘𝐹) “ (ℂ ∖ {0})) ⊆ dom (coeff‘𝐹) | |
| 10 | 1 | coef 26582 | . . . . 5 ⊢ (𝐹 ∈ (Poly‘𝑆) → (coeff‘𝐹):ℕ0⟶(𝑆 ∪ {0})) |
| 11 | 9, 10 | fssdm 6754 | . . . 4 ⊢ (𝐹 ∈ (Poly‘𝑆) → (◡(coeff‘𝐹) “ (ℂ ∖ {0})) ⊆ ℕ0) |
| 12 | 1 | dgrlem 26581 | . . . . 5 ⊢ (𝐹 ∈ (Poly‘𝑆) → ((coeff‘𝐹):ℕ0⟶(𝑆 ∪ {0}) ∧ ∃𝑛 ∈ ℤ ∀𝑥 ∈ (◡(coeff‘𝐹) “ (ℂ ∖ {0}))𝑥 ≤ 𝑛)) |
| 13 | 12 | simprd 501 | . . . 4 ⊢ (𝐹 ∈ (Poly‘𝑆) → ∃𝑛 ∈ ℤ ∀𝑥 ∈ (◡(coeff‘𝐹) “ (ℂ ∖ {0}))𝑥 ≤ 𝑛) |
| 14 | nn0uz 13033 | . . . . 5 ⊢ ℕ0 = (ℤ≥‘0) | |
| 15 | 14 | uzsupss 13097 | . . . 4 ⊢ ((0 ∈ ℤ ∧ (◡(coeff‘𝐹) “ (ℂ ∖ {0})) ⊆ ℕ0 ∧ ∃𝑛 ∈ ℤ ∀𝑥 ∈ (◡(coeff‘𝐹) “ (ℂ ∖ {0}))𝑥 ≤ 𝑛) → ∃𝑛 ∈ ℕ0 (∀𝑥 ∈ (◡(coeff‘𝐹) “ (ℂ ∖ {0})) ¬ 𝑛 < 𝑥 ∧ ∀𝑥 ∈ ℕ0 (𝑥 < 𝑛 → ∃𝑦 ∈ (◡(coeff‘𝐹) “ (ℂ ∖ {0}))𝑥 < 𝑦))) |
| 16 | 8, 11, 13, 15 | syl3anc 1399 | . . 3 ⊢ (𝐹 ∈ (Poly‘𝑆) → ∃𝑛 ∈ ℕ0 (∀𝑥 ∈ (◡(coeff‘𝐹) “ (ℂ ∖ {0})) ¬ 𝑛 < 𝑥 ∧ ∀𝑥 ∈ ℕ0 (𝑥 < 𝑛 → ∃𝑦 ∈ (◡(coeff‘𝐹) “ (ℂ ∖ {0}))𝑥 < 𝑦))) |
| 17 | 7, 16 | supcl 9480 | . 2 ⊢ (𝐹 ∈ (Poly‘𝑆) → sup((◡(coeff‘𝐹) “ (ℂ ∖ {0})), ℕ0, < ) ∈ ℕ0) |
| 18 | 2, 17 | eqeltrd 2864 | 1 ⊢ (𝐹 ∈ (Poly‘𝑆) → (deg‘𝐹) ∈ ℕ0) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ∧ wa 401 ∈ wcel 2147 ∀wral 3080 ∃wrex 3090 ⊆ wss 3900 ∖ cdif 4048 ∪ cun 4152 {csn 4588 class class class wbr 5106 Or wor 5563 ◡ccnv 5655 “ cima 5659 ⟶wf 6557 ‘cfv 6561 supcsup 9462 ℂcc 11228 ℝcr 11229 0cc0 11230 < clt 11373 ≤ cle 11374 ℕ0cn0 12636 ℤcz 12723 Polycply 26535 coeffccoe 26537 degcdgr 26538 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-rep 5236 ax-sep 5253 ax-nul 5264 ax-pow 5332 ax-pr 5396 ax-un 7778 ax-inf2 9672 ax-cnex 11286 ax-resscn 11287 ax-1cn 11288 ax-icn 11289 ax-addcl 11290 ax-addrcl 11291 ax-mulcl 11292 ax-mulrcl 11293 ax-mulcom 11294 ax-addass 11295 ax-mulass 11296 ax-distr 11297 ax-i2m1 11298 ax-1ne0 11299 ax-1rid 11300 ax-rnegex 11301 ax-rrecex 11302 ax-cnre 11303 ax-pre-lttri 11304 ax-pre-lttrn 11305 ax-pre-ltadd 11306 ax-pre-mulgt0 11307 ax-pre-sup 11308 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-int 4911 df-iun 4956 df-br 5107 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5551 df-eprel 5556 df-po 5564 df-so 5565 df-fr 5609 df-se 5610 df-we 5611 df-xp 5662 df-rel 5663 df-cnv 5664 df-co 5665 df-dm 5666 df-rn 5667 df-res 5668 df-ima 5669 df-pred 6325 df-ord 6386 df-on 6387 df-lim 6388 df-suc 6389 df-iota 6515 df-fun 6563 df-fn 6564 df-f 6565 df-f1 6566 df-fo 6567 df-f1o 6568 df-fv 6569 df-isom 6570 df-riota 7403 df-ov 7449 df-oprab 7450 df-mpo 7451 df-of 7720 df-om 7905 df-1st 8028 df-2nd 8029 df-frecs 8330 df-wrecs 8361 df-recs 8410 df-rdg 8449 df-1o 8507 df-er 8748 df-map 8880 df-pm 8881 df-en 9005 df-dom 9006 df-sdom 9007 df-fin 9008 df-sup 9464 df-inf 9465 df-oi 9534 df-card 10050 df-pnf 11375 df-mnf 11376 df-xr 11377 df-ltxr 11378 df-le 11379 df-sub 11573 df-neg 11574 df-div 12004 df-nn 12366 df-2 12435 df-3 12436 df-n0 12637 df-z 12724 df-uz 12996 df-rp 13151 df-fz 13670 df-fzo 13819 df-fl 13962 df-seq 14175 df-exp 14235 df-hash 14505 df-cj 15298 df-re 15299 df-im 15300 df-sqrt 15434 df-abs 15435 df-clim 15687 df-rlim 15688 df-sum 15886 df-0p 26024 df-ply 26539 df-coe 26541 df-dgr 26542 |
| This theorem is used by: dgrub 26586 dgrub2 26587 dgrlb 26588 coeidlem 26589 plyco 26593 dgreq 26596 0dgr 26597 dgrnznn 26599 coefv0 26600 coeaddlem 26601 coemullem 26602 coemulhi 26606 dgreq0 26617 dgrlt 26618 dgradd2 26620 dgrmul 26622 dgrmulc 26623 dgrcolem2 26626 dgrco 26627 plycj 26629 coecj 26630 plymul0or 26632 dvply2g 26639 plydivlem3 26649 plydivlem4 26650 plydivex 26651 plydiveu 26652 plyrem 26659 fta1lem 26661 fta1 26662 quotcan 26665 vieta1lem1 26666 vieta1lem2 26667 elqaalem2 26676 elqaalem3 26677 aareccl 26686 aannenlem1 26688 aannenlem2 26689 aalioulem1 26692 aaliou2 26700 taylply2 26728 signsplypnf 35262 signsply0 35263 dgraa0p 44354 mpaaeu 44355 elaa2lem 47458 etransclem46 47505 etransclem47 47506 etransclem48 47507 cjnpoly 48154 sqrtnpoly 48158 |
| Copyright terms: Public domain | W3C validator |