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| Mirrors > Home > MPE Home > Th. List > mhp0cl | Structured version Visualization version GIF version | ||
| Description: The zero polynomial is homogeneous. Under df-mhp 22056, it has any (nonnegative integer) degree which loosely corresponds to the value "undefined". The values -∞ and 0 are also used in Metamath (by df-mdeg 25993 and df-dgr 26129 respectively) and the literature: https://math.stackexchange.com/a/1796314/593843 26129. (Contributed by SN, 12-Sep-2023.) |
| Ref | Expression |
|---|---|
| mhp0cl.h | ⊢ 𝐻 = (𝐼 mHomP 𝑅) |
| mhp0cl.0 | ⊢ 0 = (0g‘𝑅) |
| mhp0cl.d | ⊢ 𝐷 = {ℎ ∈ (ℕ0 ↑m 𝐼) ∣ (◡ℎ “ ℕ) ∈ Fin} |
| mhp0cl.i | ⊢ (𝜑 → 𝐼 ∈ 𝑉) |
| mhp0cl.r | ⊢ (𝜑 → 𝑅 ∈ Grp) |
| mhp0cl.n | ⊢ (𝜑 → 𝑁 ∈ ℕ0) |
| Ref | Expression |
|---|---|
| mhp0cl | ⊢ (𝜑 → (𝐷 × { 0 }) ∈ (𝐻‘𝑁)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | mhp0cl.h | . 2 ⊢ 𝐻 = (𝐼 mHomP 𝑅) | |
| 2 | eqid 2729 | . 2 ⊢ (𝐼 mPoly 𝑅) = (𝐼 mPoly 𝑅) | |
| 3 | eqid 2729 | . 2 ⊢ (Base‘(𝐼 mPoly 𝑅)) = (Base‘(𝐼 mPoly 𝑅)) | |
| 4 | mhp0cl.0 | . 2 ⊢ 0 = (0g‘𝑅) | |
| 5 | mhp0cl.d | . 2 ⊢ 𝐷 = {ℎ ∈ (ℕ0 ↑m 𝐼) ∣ (◡ℎ “ ℕ) ∈ Fin} | |
| 6 | mhp0cl.n | . 2 ⊢ (𝜑 → 𝑁 ∈ ℕ0) | |
| 7 | eqid 2729 | . . . 4 ⊢ (0g‘(𝐼 mPoly 𝑅)) = (0g‘(𝐼 mPoly 𝑅)) | |
| 8 | mhp0cl.i | . . . 4 ⊢ (𝜑 → 𝐼 ∈ 𝑉) | |
| 9 | mhp0cl.r | . . . 4 ⊢ (𝜑 → 𝑅 ∈ Grp) | |
| 10 | 2, 5, 4, 7, 8, 9 | mpl0 21948 | . . 3 ⊢ (𝜑 → (0g‘(𝐼 mPoly 𝑅)) = (𝐷 × { 0 })) |
| 11 | 2 | mplgrp 21959 | . . . . 5 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝑅 ∈ Grp) → (𝐼 mPoly 𝑅) ∈ Grp) |
| 12 | 8, 9, 11 | syl2anc 584 | . . . 4 ⊢ (𝜑 → (𝐼 mPoly 𝑅) ∈ Grp) |
| 13 | 3, 7 | grpidcl 18879 | . . . 4 ⊢ ((𝐼 mPoly 𝑅) ∈ Grp → (0g‘(𝐼 mPoly 𝑅)) ∈ (Base‘(𝐼 mPoly 𝑅))) |
| 14 | 12, 13 | syl 17 | . . 3 ⊢ (𝜑 → (0g‘(𝐼 mPoly 𝑅)) ∈ (Base‘(𝐼 mPoly 𝑅))) |
| 15 | 10, 14 | eqeltrrd 2829 | . 2 ⊢ (𝜑 → (𝐷 × { 0 }) ∈ (Base‘(𝐼 mPoly 𝑅))) |
| 16 | fczsupp0 8149 | . . . 4 ⊢ ((𝐷 × { 0 }) supp 0 ) = ∅ | |
| 17 | 0ss 4359 | . . . 4 ⊢ ∅ ⊆ {𝑔 ∈ 𝐷 ∣ ((ℂfld ↾s ℕ0) Σg 𝑔) = 𝑁} | |
| 18 | 16, 17 | eqsstri 3990 | . . 3 ⊢ ((𝐷 × { 0 }) supp 0 ) ⊆ {𝑔 ∈ 𝐷 ∣ ((ℂfld ↾s ℕ0) Σg 𝑔) = 𝑁} |
| 19 | 18 | a1i 11 | . 2 ⊢ (𝜑 → ((𝐷 × { 0 }) supp 0 ) ⊆ {𝑔 ∈ 𝐷 ∣ ((ℂfld ↾s ℕ0) Σg 𝑔) = 𝑁}) |
| 20 | 1, 2, 3, 4, 5, 6, 15, 19 | ismhp2 22061 | 1 ⊢ (𝜑 → (𝐷 × { 0 }) ∈ (𝐻‘𝑁)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1540 ∈ wcel 2109 {crab 3402 ⊆ wss 3911 ∅c0 4292 {csn 4585 × cxp 5629 ◡ccnv 5630 “ cima 5634 ‘cfv 6499 (class class class)co 7369 supp csupp 8116 ↑m cmap 8776 Fincfn 8895 ℕcn 12162 ℕ0cn0 12418 Basecbs 17155 ↾s cress 17176 0gc0g 17378 Σg cgsu 17379 Grpcgrp 18847 ℂfldccnfld 21296 mPoly cmpl 21848 mHomP cmhp 22049 |
| 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 5229 ax-sep 5246 ax-nul 5256 ax-pow 5315 ax-pr 5382 ax-un 7691 ax-cnex 11100 ax-resscn 11101 ax-1cn 11102 ax-icn 11103 ax-addcl 11104 ax-addrcl 11105 ax-mulcl 11106 ax-mulrcl 11107 ax-mulcom 11108 ax-addass 11109 ax-mulass 11110 ax-distr 11111 ax-i2m1 11112 ax-1ne0 11113 ax-1rid 11114 ax-rnegex 11115 ax-rrecex 11116 ax-cnre 11117 ax-pre-lttri 11118 ax-pre-lttrn 11119 ax-pre-ltadd 11120 ax-pre-mulgt0 11121 |
| 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 3351 df-reu 3352 df-rab 3403 df-v 3446 df-sbc 3751 df-csb 3860 df-dif 3914 df-un 3916 df-in 3918 df-ss 3928 df-pss 3931 df-nul 4293 df-if 4485 df-pw 4561 df-sn 4586 df-pr 4588 df-tp 4590 df-op 4592 df-uni 4868 df-iun 4953 df-br 5103 df-opab 5165 df-mpt 5184 df-tr 5210 df-id 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-we 5586 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6262 df-ord 6323 df-on 6324 df-lim 6325 df-suc 6326 df-iota 6452 df-fun 6501 df-fn 6502 df-f 6503 df-f1 6504 df-fo 6505 df-f1o 6506 df-fv 6507 df-riota 7326 df-ov 7372 df-oprab 7373 df-mpo 7374 df-of 7633 df-om 7823 df-1st 7947 df-2nd 7948 df-supp 8117 df-frecs 8237 df-wrecs 8268 df-recs 8317 df-rdg 8355 df-1o 8411 df-er 8648 df-map 8778 df-ixp 8848 df-en 8896 df-dom 8897 df-sdom 8898 df-fin 8899 df-fsupp 9289 df-sup 9369 df-pnf 11186 df-mnf 11187 df-xr 11188 df-ltxr 11189 df-le 11190 df-sub 11383 df-neg 11384 df-nn 12163 df-2 12225 df-3 12226 df-4 12227 df-5 12228 df-6 12229 df-7 12230 df-8 12231 df-9 12232 df-n0 12419 df-z 12506 df-dec 12626 df-uz 12770 df-fz 13445 df-struct 17093 df-sets 17110 df-slot 17128 df-ndx 17140 df-base 17156 df-ress 17177 df-plusg 17209 df-mulr 17210 df-sca 17212 df-vsca 17213 df-ip 17214 df-tset 17215 df-ple 17216 df-ds 17218 df-hom 17220 df-cco 17221 df-0g 17380 df-prds 17386 df-pws 17388 df-mgm 18549 df-sgrp 18628 df-mnd 18644 df-grp 18850 df-minusg 18851 df-subg 19037 df-psr 21851 df-mpl 21853 df-mhp 22056 |
| This theorem is referenced by: mhpsubg 22073 mhpind 42575 prjcrv0 42614 |
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