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| Mirrors > Home > MPE Home > Th. List > mdegxrf | Structured version Visualization version GIF version | ||
| Description: Functionality of polynomial degree in the extended reals. (Contributed by Stefan O'Rear, 19-Mar-2015.) (Proof shortened by AV, 27-Jul-2019.) |
| Ref | Expression |
|---|---|
| mdegxrcl.d | ⊢ 𝐷 = (𝐼 mDeg 𝑅) |
| mdegxrcl.p | ⊢ 𝑃 = (𝐼 mPoly 𝑅) |
| mdegxrcl.b | ⊢ 𝐵 = (Base‘𝑃) |
| Ref | Expression |
|---|---|
| mdegxrf | ⊢ 𝐷:𝐵⟶ℝ* |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | xrltso 13101 | . . . 4 ⊢ < Or ℝ* | |
| 2 | 1 | supex 9415 | . . 3 ⊢ sup(((𝑦 ∈ {𝑥 ∈ (ℕ0 ↑m 𝐼) ∣ (◡𝑥 “ ℕ) ∈ Fin} ↦ (ℂfld Σg 𝑦)) “ (𝑧 supp (0g‘𝑅))), ℝ*, < ) ∈ V |
| 3 | mdegxrcl.d | . . . 4 ⊢ 𝐷 = (𝐼 mDeg 𝑅) | |
| 4 | mdegxrcl.p | . . . 4 ⊢ 𝑃 = (𝐼 mPoly 𝑅) | |
| 5 | mdegxrcl.b | . . . 4 ⊢ 𝐵 = (Base‘𝑃) | |
| 6 | eqid 2729 | . . . 4 ⊢ (0g‘𝑅) = (0g‘𝑅) | |
| 7 | eqid 2729 | . . . 4 ⊢ {𝑥 ∈ (ℕ0 ↑m 𝐼) ∣ (◡𝑥 “ ℕ) ∈ Fin} = {𝑥 ∈ (ℕ0 ↑m 𝐼) ∣ (◡𝑥 “ ℕ) ∈ Fin} | |
| 8 | eqid 2729 | . . . 4 ⊢ (𝑦 ∈ {𝑥 ∈ (ℕ0 ↑m 𝐼) ∣ (◡𝑥 “ ℕ) ∈ Fin} ↦ (ℂfld Σg 𝑦)) = (𝑦 ∈ {𝑥 ∈ (ℕ0 ↑m 𝐼) ∣ (◡𝑥 “ ℕ) ∈ Fin} ↦ (ℂfld Σg 𝑦)) | |
| 9 | 3, 4, 5, 6, 7, 8 | mdegfval 25967 | . . 3 ⊢ 𝐷 = (𝑧 ∈ 𝐵 ↦ sup(((𝑦 ∈ {𝑥 ∈ (ℕ0 ↑m 𝐼) ∣ (◡𝑥 “ ℕ) ∈ Fin} ↦ (ℂfld Σg 𝑦)) “ (𝑧 supp (0g‘𝑅))), ℝ*, < )) |
| 10 | 2, 9 | fnmpti 6661 | . 2 ⊢ 𝐷 Fn 𝐵 |
| 11 | 3, 4, 5 | mdegxrcl 25972 | . . 3 ⊢ (𝑓 ∈ 𝐵 → (𝐷‘𝑓) ∈ ℝ*) |
| 12 | 11 | rgen 3046 | . 2 ⊢ ∀𝑓 ∈ 𝐵 (𝐷‘𝑓) ∈ ℝ* |
| 13 | ffnfv 7091 | . 2 ⊢ (𝐷:𝐵⟶ℝ* ↔ (𝐷 Fn 𝐵 ∧ ∀𝑓 ∈ 𝐵 (𝐷‘𝑓) ∈ ℝ*)) | |
| 14 | 10, 12, 13 | mpbir2an 711 | 1 ⊢ 𝐷:𝐵⟶ℝ* |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1540 ∈ wcel 2109 ∀wral 3044 {crab 3405 ↦ cmpt 5188 ◡ccnv 5637 “ cima 5641 Fn wfn 6506 ⟶wf 6507 ‘cfv 6511 (class class class)co 7387 supp csupp 8139 ↑m cmap 8799 Fincfn 8918 supcsup 9391 ℝ*cxr 11207 < clt 11208 ℕcn 12186 ℕ0cn0 12442 Basecbs 17179 0gc0g 17402 Σg cgsu 17403 ℂfldccnfld 21264 mPoly cmpl 21815 mDeg cmdg 25958 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-rep 5234 ax-sep 5251 ax-nul 5261 ax-pow 5320 ax-pr 5387 ax-un 7711 ax-cnex 11124 ax-resscn 11125 ax-1cn 11126 ax-icn 11127 ax-addcl 11128 ax-addrcl 11129 ax-mulcl 11130 ax-mulrcl 11131 ax-mulcom 11132 ax-addass 11133 ax-mulass 11134 ax-distr 11135 ax-i2m1 11136 ax-1ne0 11137 ax-1rid 11138 ax-rnegex 11139 ax-rrecex 11140 ax-cnre 11141 ax-pre-lttri 11142 ax-pre-lttrn 11143 ax-pre-ltadd 11144 ax-pre-mulgt0 11145 ax-pre-sup 11146 ax-addf 11147 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-nel 3030 df-ral 3045 df-rex 3054 df-rmo 3354 df-reu 3355 df-rab 3406 df-v 3449 df-sbc 3754 df-csb 3863 df-dif 3917 df-un 3919 df-in 3921 df-ss 3931 df-pss 3934 df-nul 4297 df-if 4489 df-pw 4565 df-sn 4590 df-pr 4592 df-tp 4594 df-op 4596 df-uni 4872 df-int 4911 df-iun 4957 df-br 5108 df-opab 5170 df-mpt 5189 df-tr 5215 df-id 5533 df-eprel 5538 df-po 5546 df-so 5547 df-fr 5591 df-se 5592 df-we 5593 df-xp 5644 df-rel 5645 df-cnv 5646 df-co 5647 df-dm 5648 df-rn 5649 df-res 5650 df-ima 5651 df-pred 6274 df-ord 6335 df-on 6336 df-lim 6337 df-suc 6338 df-iota 6464 df-fun 6513 df-fn 6514 df-f 6515 df-f1 6516 df-fo 6517 df-f1o 6518 df-fv 6519 df-isom 6520 df-riota 7344 df-ov 7390 df-oprab 7391 df-mpo 7392 df-of 7653 df-om 7843 df-1st 7968 df-2nd 7969 df-supp 8140 df-frecs 8260 df-wrecs 8291 df-recs 8340 df-rdg 8378 df-1o 8434 df-er 8671 df-map 8801 df-en 8919 df-dom 8920 df-sdom 8921 df-fin 8922 df-fsupp 9313 df-sup 9393 df-oi 9463 df-card 9892 df-pnf 11210 df-mnf 11211 df-xr 11212 df-ltxr 11213 df-le 11214 df-sub 11407 df-neg 11408 df-nn 12187 df-2 12249 df-3 12250 df-4 12251 df-5 12252 df-6 12253 df-7 12254 df-8 12255 df-9 12256 df-n0 12443 df-z 12530 df-dec 12650 df-uz 12794 df-fz 13469 df-fzo 13616 df-seq 13967 df-hash 14296 df-struct 17117 df-sets 17134 df-slot 17152 df-ndx 17164 df-base 17180 df-ress 17201 df-plusg 17233 df-mulr 17234 df-starv 17235 df-sca 17236 df-vsca 17237 df-tset 17239 df-ple 17240 df-ds 17242 df-unif 17243 df-0g 17404 df-gsum 17405 df-mgm 18567 df-sgrp 18646 df-mnd 18662 df-submnd 18711 df-grp 18868 df-minusg 18869 df-cntz 19249 df-cmn 19712 df-abl 19713 df-mgp 20050 df-ur 20091 df-ring 20144 df-cring 20145 df-cnfld 21265 df-psr 21818 df-mpl 21820 df-mdeg 25960 |
| This theorem is referenced by: deg1xrf 25986 |
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