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| Mirrors > Home > ILE Home > Th. List > ecqusaddcl | GIF version | ||
| Description: Closure of the addition in a quotient group. (Contributed by AV, 24-Feb-2025.) |
| Ref | Expression |
|---|---|
| ecqusaddd.i | ⊢ (𝜑 → 𝐼 ∈ (NrmSGrp‘𝑅)) |
| ecqusaddd.b | ⊢ 𝐵 = (Base‘𝑅) |
| ecqusaddd.g | ⊢ ∼ = (𝑅 ~QG 𝐼) |
| ecqusaddd.q | ⊢ 𝑄 = (𝑅 /s ∼ ) |
| Ref | Expression |
|---|---|
| ecqusaddcl | ⊢ ((𝜑 ∧ (𝐴 ∈ 𝐵 ∧ 𝐶 ∈ 𝐵)) → ([𝐴] ∼ (+g‘𝑄)[𝐶] ∼ ) ∈ (Base‘𝑄)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ecqusaddd.i | . . 3 ⊢ (𝜑 → 𝐼 ∈ (NrmSGrp‘𝑅)) | |
| 2 | ecqusaddd.b | . . 3 ⊢ 𝐵 = (Base‘𝑅) | |
| 3 | ecqusaddd.g | . . 3 ⊢ ∼ = (𝑅 ~QG 𝐼) | |
| 4 | ecqusaddd.q | . . 3 ⊢ 𝑄 = (𝑅 /s ∼ ) | |
| 5 | 1, 2, 3, 4 | ecqusaddd 13888 | . 2 ⊢ ((𝜑 ∧ (𝐴 ∈ 𝐵 ∧ 𝐶 ∈ 𝐵)) → [(𝐴(+g‘𝑅)𝐶)] ∼ = ([𝐴] ∼ (+g‘𝑄)[𝐶] ∼ )) |
| 6 | nsgsubg 13855 | . . . . 5 ⊢ (𝐼 ∈ (NrmSGrp‘𝑅) → 𝐼 ∈ (SubGrp‘𝑅)) | |
| 7 | subgrcl 13829 | . . . . 5 ⊢ (𝐼 ∈ (SubGrp‘𝑅) → 𝑅 ∈ Grp) | |
| 8 | 1, 6, 7 | 3syl 17 | . . . 4 ⊢ (𝜑 → 𝑅 ∈ Grp) |
| 9 | 8 | adantr 276 | . . 3 ⊢ ((𝜑 ∧ (𝐴 ∈ 𝐵 ∧ 𝐶 ∈ 𝐵)) → 𝑅 ∈ Grp) |
| 10 | 8 | anim1i 340 | . . . . 5 ⊢ ((𝜑 ∧ (𝐴 ∈ 𝐵 ∧ 𝐶 ∈ 𝐵)) → (𝑅 ∈ Grp ∧ (𝐴 ∈ 𝐵 ∧ 𝐶 ∈ 𝐵))) |
| 11 | 3anass 1009 | . . . . 5 ⊢ ((𝑅 ∈ Grp ∧ 𝐴 ∈ 𝐵 ∧ 𝐶 ∈ 𝐵) ↔ (𝑅 ∈ Grp ∧ (𝐴 ∈ 𝐵 ∧ 𝐶 ∈ 𝐵))) | |
| 12 | 10, 11 | sylibr 134 | . . . 4 ⊢ ((𝜑 ∧ (𝐴 ∈ 𝐵 ∧ 𝐶 ∈ 𝐵)) → (𝑅 ∈ Grp ∧ 𝐴 ∈ 𝐵 ∧ 𝐶 ∈ 𝐵)) |
| 13 | eqid 2231 | . . . . 5 ⊢ (+g‘𝑅) = (+g‘𝑅) | |
| 14 | 2, 13 | grpcl 13654 | . . . 4 ⊢ ((𝑅 ∈ Grp ∧ 𝐴 ∈ 𝐵 ∧ 𝐶 ∈ 𝐵) → (𝐴(+g‘𝑅)𝐶) ∈ 𝐵) |
| 15 | 12, 14 | syl 14 | . . 3 ⊢ ((𝜑 ∧ (𝐴 ∈ 𝐵 ∧ 𝐶 ∈ 𝐵)) → (𝐴(+g‘𝑅)𝐶) ∈ 𝐵) |
| 16 | 1 | adantr 276 | . . 3 ⊢ ((𝜑 ∧ (𝐴 ∈ 𝐵 ∧ 𝐶 ∈ 𝐵)) → 𝐼 ∈ (NrmSGrp‘𝑅)) |
| 17 | eqid 2231 | . . . 4 ⊢ (Base‘𝑄) = (Base‘𝑄) | |
| 18 | 3, 4, 2, 17 | quseccl0g 13881 | . . 3 ⊢ ((𝑅 ∈ Grp ∧ (𝐴(+g‘𝑅)𝐶) ∈ 𝐵 ∧ 𝐼 ∈ (NrmSGrp‘𝑅)) → [(𝐴(+g‘𝑅)𝐶)] ∼ ∈ (Base‘𝑄)) |
| 19 | 9, 15, 16, 18 | syl3anc 1274 | . 2 ⊢ ((𝜑 ∧ (𝐴 ∈ 𝐵 ∧ 𝐶 ∈ 𝐵)) → [(𝐴(+g‘𝑅)𝐶)] ∼ ∈ (Base‘𝑄)) |
| 20 | 5, 19 | eqeltrrd 2309 | 1 ⊢ ((𝜑 ∧ (𝐴 ∈ 𝐵 ∧ 𝐶 ∈ 𝐵)) → ([𝐴] ∼ (+g‘𝑄)[𝐶] ∼ ) ∈ (Base‘𝑄)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ∧ w3a 1005 = wceq 1398 ∈ wcel 2202 ‘cfv 5333 (class class class)co 6028 [cec 6743 Basecbs 13145 +gcplusg 13223 /s cqus 13446 Grpcgrp 13646 SubGrpcsubg 13817 NrmSGrpcnsg 13818 ~QG cqg 13819 |
| 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 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2204 ax-14 2205 ax-ext 2213 ax-coll 4209 ax-sep 4212 ax-pow 4270 ax-pr 4305 ax-un 4536 ax-setind 4641 ax-cnex 8166 ax-resscn 8167 ax-1cn 8168 ax-1re 8169 ax-icn 8170 ax-addcl 8171 ax-addrcl 8172 ax-mulcl 8173 ax-addcom 8175 ax-addass 8177 ax-i2m1 8180 ax-0lt1 8181 ax-0id 8183 ax-rnegex 8184 ax-pre-ltirr 8187 ax-pre-lttrn 8189 ax-pre-ltadd 8191 |
| This theorem depends on definitions: df-bi 117 df-3or 1006 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ne 2404 df-nel 2499 df-ral 2516 df-rex 2517 df-reu 2518 df-rmo 2519 df-rab 2520 df-v 2805 df-sbc 3033 df-csb 3129 df-dif 3203 df-un 3205 df-in 3207 df-ss 3214 df-nul 3497 df-pw 3658 df-sn 3679 df-pr 3680 df-tp 3681 df-op 3682 df-uni 3899 df-int 3934 df-iun 3977 df-br 4094 df-opab 4156 df-mpt 4157 df-id 4396 df-xp 4737 df-rel 4738 df-cnv 4739 df-co 4740 df-dm 4741 df-rn 4742 df-res 4743 df-ima 4744 df-iota 5293 df-fun 5335 df-fn 5336 df-f 5337 df-f1 5338 df-fo 5339 df-f1o 5340 df-fv 5341 df-riota 5981 df-ov 6031 df-oprab 6032 df-mpo 6033 df-er 6745 df-ec 6747 df-qs 6751 df-pnf 8258 df-mnf 8259 df-ltxr 8261 df-inn 9186 df-2 9244 df-3 9245 df-ndx 13148 df-slot 13149 df-base 13151 df-sets 13152 df-iress 13153 df-plusg 13236 df-mulr 13237 df-0g 13404 df-iimas 13448 df-qus 13449 df-mgm 13502 df-sgrp 13548 df-mnd 13563 df-grp 13649 df-minusg 13650 df-subg 13820 df-nsg 13821 df-eqg 13822 |
| This theorem is referenced by: (None) |
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