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| Mirrors > Home > ILE Home > Th. List > dvrfvald | GIF version | ||
| Description: Division operation in a ring. (Contributed by Mario Carneiro, 2-Jul-2014.) (Revised by Mario Carneiro, 2-Dec-2014.) (Proof shortened by AV, 2-Mar-2024.) |
| Ref | Expression |
|---|---|
| dvrfvald.b | ⊢ (𝜑 → 𝐵 = (Base‘𝑅)) |
| dvrfvald.t | ⊢ (𝜑 → · = (.r‘𝑅)) |
| dvrfvald.u | ⊢ (𝜑 → 𝑈 = (Unit‘𝑅)) |
| dvrfvald.i | ⊢ (𝜑 → 𝐼 = (invr‘𝑅)) |
| dvrfvald.d | ⊢ (𝜑 → / = (/r‘𝑅)) |
| dvrfvald.r | ⊢ (𝜑 → 𝑅 ∈ SRing) |
| Ref | Expression |
|---|---|
| dvrfvald | ⊢ (𝜑 → / = (𝑥 ∈ 𝐵, 𝑦 ∈ 𝑈 ↦ (𝑥 · (𝐼‘𝑦)))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-dvr 13764 | . . 3 ⊢ /r = (𝑟 ∈ V ↦ (𝑥 ∈ (Base‘𝑟), 𝑦 ∈ (Unit‘𝑟) ↦ (𝑥(.r‘𝑟)((invr‘𝑟)‘𝑦)))) | |
| 2 | fveq2 5561 | . . . 4 ⊢ (𝑟 = 𝑅 → (Base‘𝑟) = (Base‘𝑅)) | |
| 3 | fveq2 5561 | . . . 4 ⊢ (𝑟 = 𝑅 → (Unit‘𝑟) = (Unit‘𝑅)) | |
| 4 | fveq2 5561 | . . . . 5 ⊢ (𝑟 = 𝑅 → (.r‘𝑟) = (.r‘𝑅)) | |
| 5 | eqidd 2197 | . . . . 5 ⊢ (𝑟 = 𝑅 → 𝑥 = 𝑥) | |
| 6 | fveq2 5561 | . . . . . 6 ⊢ (𝑟 = 𝑅 → (invr‘𝑟) = (invr‘𝑅)) | |
| 7 | 6 | fveq1d 5563 | . . . . 5 ⊢ (𝑟 = 𝑅 → ((invr‘𝑟)‘𝑦) = ((invr‘𝑅)‘𝑦)) |
| 8 | 4, 5, 7 | oveq123d 5946 | . . . 4 ⊢ (𝑟 = 𝑅 → (𝑥(.r‘𝑟)((invr‘𝑟)‘𝑦)) = (𝑥(.r‘𝑅)((invr‘𝑅)‘𝑦))) |
| 9 | 2, 3, 8 | mpoeq123dv 5988 | . . 3 ⊢ (𝑟 = 𝑅 → (𝑥 ∈ (Base‘𝑟), 𝑦 ∈ (Unit‘𝑟) ↦ (𝑥(.r‘𝑟)((invr‘𝑟)‘𝑦))) = (𝑥 ∈ (Base‘𝑅), 𝑦 ∈ (Unit‘𝑅) ↦ (𝑥(.r‘𝑅)((invr‘𝑅)‘𝑦)))) |
| 10 | dvrfvald.r | . . . 4 ⊢ (𝜑 → 𝑅 ∈ SRing) | |
| 11 | 10 | elexd 2776 | . . 3 ⊢ (𝜑 → 𝑅 ∈ V) |
| 12 | basfn 12761 | . . . . 5 ⊢ Base Fn V | |
| 13 | funfvex 5578 | . . . . . 6 ⊢ ((Fun Base ∧ 𝑅 ∈ dom Base) → (Base‘𝑅) ∈ V) | |
| 14 | 13 | funfni 5361 | . . . . 5 ⊢ ((Base Fn V ∧ 𝑅 ∈ V) → (Base‘𝑅) ∈ V) |
| 15 | 12, 11, 14 | sylancr 414 | . . . 4 ⊢ (𝜑 → (Base‘𝑅) ∈ V) |
| 16 | eqidd 2197 | . . . . . 6 ⊢ (𝜑 → (Base‘𝑅) = (Base‘𝑅)) | |
| 17 | eqidd 2197 | . . . . . 6 ⊢ (𝜑 → (Unit‘𝑅) = (Unit‘𝑅)) | |
| 18 | 16, 17, 10 | unitssd 13741 | . . . . 5 ⊢ (𝜑 → (Unit‘𝑅) ⊆ (Base‘𝑅)) |
| 19 | 15, 18 | ssexd 4174 | . . . 4 ⊢ (𝜑 → (Unit‘𝑅) ∈ V) |
| 20 | mpoexga 6279 | . . . 4 ⊢ (((Base‘𝑅) ∈ V ∧ (Unit‘𝑅) ∈ V) → (𝑥 ∈ (Base‘𝑅), 𝑦 ∈ (Unit‘𝑅) ↦ (𝑥(.r‘𝑅)((invr‘𝑅)‘𝑦))) ∈ V) | |
| 21 | 15, 19, 20 | syl2anc 411 | . . 3 ⊢ (𝜑 → (𝑥 ∈ (Base‘𝑅), 𝑦 ∈ (Unit‘𝑅) ↦ (𝑥(.r‘𝑅)((invr‘𝑅)‘𝑦))) ∈ V) |
| 22 | 1, 9, 11, 21 | fvmptd3 5658 | . 2 ⊢ (𝜑 → (/r‘𝑅) = (𝑥 ∈ (Base‘𝑅), 𝑦 ∈ (Unit‘𝑅) ↦ (𝑥(.r‘𝑅)((invr‘𝑅)‘𝑦)))) |
| 23 | dvrfvald.d | . 2 ⊢ (𝜑 → / = (/r‘𝑅)) | |
| 24 | dvrfvald.b | . . 3 ⊢ (𝜑 → 𝐵 = (Base‘𝑅)) | |
| 25 | dvrfvald.u | . . 3 ⊢ (𝜑 → 𝑈 = (Unit‘𝑅)) | |
| 26 | dvrfvald.t | . . . 4 ⊢ (𝜑 → · = (.r‘𝑅)) | |
| 27 | eqidd 2197 | . . . 4 ⊢ (𝜑 → 𝑥 = 𝑥) | |
| 28 | dvrfvald.i | . . . . 5 ⊢ (𝜑 → 𝐼 = (invr‘𝑅)) | |
| 29 | 28 | fveq1d 5563 | . . . 4 ⊢ (𝜑 → (𝐼‘𝑦) = ((invr‘𝑅)‘𝑦)) |
| 30 | 26, 27, 29 | oveq123d 5946 | . . 3 ⊢ (𝜑 → (𝑥 · (𝐼‘𝑦)) = (𝑥(.r‘𝑅)((invr‘𝑅)‘𝑦))) |
| 31 | 24, 25, 30 | mpoeq123dv 5988 | . 2 ⊢ (𝜑 → (𝑥 ∈ 𝐵, 𝑦 ∈ 𝑈 ↦ (𝑥 · (𝐼‘𝑦))) = (𝑥 ∈ (Base‘𝑅), 𝑦 ∈ (Unit‘𝑅) ↦ (𝑥(.r‘𝑅)((invr‘𝑅)‘𝑦)))) |
| 32 | 22, 23, 31 | 3eqtr4d 2239 | 1 ⊢ (𝜑 → / = (𝑥 ∈ 𝐵, 𝑦 ∈ 𝑈 ↦ (𝑥 · (𝐼‘𝑦)))) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1364 ∈ wcel 2167 Vcvv 2763 Fn wfn 5254 ‘cfv 5259 (class class class)co 5925 ∈ cmpo 5927 Basecbs 12703 .rcmulr 12781 SRingcsrg 13595 Unitcui 13719 invrcinvr 13752 /rcdvr 13763 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-13 2169 ax-14 2170 ax-ext 2178 ax-coll 4149 ax-sep 4152 ax-pow 4208 ax-pr 4243 ax-un 4469 ax-setind 4574 ax-cnex 7987 ax-resscn 7988 ax-1cn 7989 ax-1re 7990 ax-icn 7991 ax-addcl 7992 ax-addrcl 7993 ax-mulcl 7994 ax-addcom 7996 ax-addass 7998 ax-i2m1 8001 ax-0lt1 8002 ax-0id 8004 ax-rnegex 8005 ax-pre-ltirr 8008 ax-pre-ltadd 8012 |
| This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-fal 1370 df-nf 1475 df-sb 1777 df-eu 2048 df-mo 2049 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ne 2368 df-nel 2463 df-ral 2480 df-rex 2481 df-reu 2482 df-rab 2484 df-v 2765 df-sbc 2990 df-csb 3085 df-dif 3159 df-un 3161 df-in 3163 df-ss 3170 df-nul 3452 df-pw 3608 df-sn 3629 df-pr 3630 df-op 3632 df-uni 3841 df-int 3876 df-iun 3919 df-br 4035 df-opab 4096 df-mpt 4097 df-id 4329 df-xp 4670 df-rel 4671 df-cnv 4672 df-co 4673 df-dm 4674 df-rn 4675 df-res 4676 df-ima 4677 df-iota 5220 df-fun 5261 df-fn 5262 df-f 5263 df-f1 5264 df-fo 5265 df-f1o 5266 df-fv 5267 df-riota 5880 df-ov 5928 df-oprab 5929 df-mpo 5930 df-1st 6207 df-2nd 6208 df-pnf 8080 df-mnf 8081 df-ltxr 8083 df-inn 9008 df-2 9066 df-3 9067 df-ndx 12706 df-slot 12707 df-base 12709 df-sets 12710 df-plusg 12793 df-mulr 12794 df-0g 12960 df-mgm 13058 df-sgrp 13104 df-mnd 13119 df-mgp 13553 df-srg 13596 df-dvdsr 13721 df-unit 13722 df-dvr 13764 |
| This theorem is referenced by: dvrvald 13766 |
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