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| Mirrors > Home > ILE Home > Th. List > sraring | GIF version | ||
| Description: Condition for a subring algebra to be a ring. (Contributed by Thierry Arnoux, 24-Jul-2023.) |
| Ref | Expression |
|---|---|
| sraring.1 | ⊢ 𝐴 = ((subringAlg ‘𝑅)‘𝑉) |
| sraring.2 | ⊢ 𝐵 = (Base‘𝑅) |
| Ref | Expression |
|---|---|
| sraring | ⊢ ((𝑅 ∈ Ring ∧ 𝑉 ⊆ 𝐵) → 𝐴 ∈ Ring) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | simpl 109 | . 2 ⊢ ((𝑅 ∈ Ring ∧ 𝑉 ⊆ 𝐵) → 𝑅 ∈ Ring) | |
| 2 | sraring.2 | . . . 4 ⊢ 𝐵 = (Base‘𝑅) | |
| 3 | 2 | a1i 9 | . . 3 ⊢ ((𝑅 ∈ Ring ∧ 𝑉 ⊆ 𝐵) → 𝐵 = (Base‘𝑅)) |
| 4 | sraring.1 | . . . . . 6 ⊢ 𝐴 = ((subringAlg ‘𝑅)‘𝑉) | |
| 5 | 4 | a1i 9 | . . . . 5 ⊢ ((𝑅 ∈ Ring ∧ 𝑉 ⊆ 𝐵) → 𝐴 = ((subringAlg ‘𝑅)‘𝑉)) |
| 6 | id 19 | . . . . . . 7 ⊢ (𝑉 ⊆ 𝐵 → 𝑉 ⊆ 𝐵) | |
| 7 | 6, 2 | sseqtrdi 3273 | . . . . . 6 ⊢ (𝑉 ⊆ 𝐵 → 𝑉 ⊆ (Base‘𝑅)) |
| 8 | 7 | adantl 277 | . . . . 5 ⊢ ((𝑅 ∈ Ring ∧ 𝑉 ⊆ 𝐵) → 𝑉 ⊆ (Base‘𝑅)) |
| 9 | 5, 8, 1 | srabaseg 14446 | . . . 4 ⊢ ((𝑅 ∈ Ring ∧ 𝑉 ⊆ 𝐵) → (Base‘𝑅) = (Base‘𝐴)) |
| 10 | 2, 9 | eqtrid 2274 | . . 3 ⊢ ((𝑅 ∈ Ring ∧ 𝑉 ⊆ 𝐵) → 𝐵 = (Base‘𝐴)) |
| 11 | 5, 8, 1 | sraaddgg 14447 | . . . 4 ⊢ ((𝑅 ∈ Ring ∧ 𝑉 ⊆ 𝐵) → (+g‘𝑅) = (+g‘𝐴)) |
| 12 | 11 | oveqdr 6041 | . . 3 ⊢ (((𝑅 ∈ Ring ∧ 𝑉 ⊆ 𝐵) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝑥(+g‘𝑅)𝑦) = (𝑥(+g‘𝐴)𝑦)) |
| 13 | 5, 8, 1 | sramulrg 14448 | . . . 4 ⊢ ((𝑅 ∈ Ring ∧ 𝑉 ⊆ 𝐵) → (.r‘𝑅) = (.r‘𝐴)) |
| 14 | 13 | oveqdr 6041 | . . 3 ⊢ (((𝑅 ∈ Ring ∧ 𝑉 ⊆ 𝐵) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝑥(.r‘𝑅)𝑦) = (𝑥(.r‘𝐴)𝑦)) |
| 15 | 3, 10, 12, 14 | ringpropd 14044 | . 2 ⊢ ((𝑅 ∈ Ring ∧ 𝑉 ⊆ 𝐵) → (𝑅 ∈ Ring ↔ 𝐴 ∈ Ring)) |
| 16 | 1, 15 | mpbid 147 | 1 ⊢ ((𝑅 ∈ Ring ∧ 𝑉 ⊆ 𝐵) → 𝐴 ∈ Ring) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 = wceq 1395 ∈ wcel 2200 ⊆ wss 3198 ‘cfv 5324 Basecbs 13075 +gcplusg 13153 .rcmulr 13154 Ringcrg 14002 subringAlg csra 14440 |
| 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 617 ax-in2 618 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-coll 4202 ax-sep 4205 ax-pow 4262 ax-pr 4297 ax-un 4528 ax-setind 4633 ax-cnex 8116 ax-resscn 8117 ax-1cn 8118 ax-1re 8119 ax-icn 8120 ax-addcl 8121 ax-addrcl 8122 ax-mulcl 8123 ax-addcom 8125 ax-addass 8127 ax-i2m1 8130 ax-0lt1 8131 ax-0id 8133 ax-rnegex 8134 ax-pre-ltirr 8137 ax-pre-lttrn 8139 ax-pre-ltadd 8141 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-fal 1401 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ne 2401 df-nel 2496 df-ral 2513 df-rex 2514 df-reu 2515 df-rab 2517 df-v 2802 df-sbc 3030 df-csb 3126 df-dif 3200 df-un 3202 df-in 3204 df-ss 3211 df-nul 3493 df-pw 3652 df-sn 3673 df-pr 3674 df-op 3676 df-uni 3892 df-int 3927 df-iun 3970 df-br 4087 df-opab 4149 df-mpt 4150 df-id 4388 df-xp 4729 df-rel 4730 df-cnv 4731 df-co 4732 df-dm 4733 df-rn 4734 df-res 4735 df-ima 4736 df-iota 5284 df-fun 5326 df-fn 5327 df-f 5328 df-f1 5329 df-fo 5330 df-f1o 5331 df-fv 5332 df-riota 5966 df-ov 6016 df-oprab 6017 df-mpo 6018 df-pnf 8209 df-mnf 8210 df-ltxr 8212 df-inn 9137 df-2 9195 df-3 9196 df-4 9197 df-5 9198 df-6 9199 df-7 9200 df-8 9201 df-ndx 13078 df-slot 13079 df-base 13081 df-sets 13082 df-iress 13083 df-plusg 13166 df-mulr 13167 df-sca 13169 df-vsca 13170 df-ip 13171 df-0g 13334 df-mgm 13432 df-sgrp 13478 df-mnd 13493 df-grp 13579 df-mgp 13927 df-ring 14004 df-sra 14442 |
| This theorem is referenced by: (None) |
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