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| Mirrors > Home > ILE Home > Th. List > quseccl0g | GIF version | ||
| Description: Closure of the quotient map for a quotient group. (Contributed by Mario Carneiro, 18-Sep-2015.) Generalization of quseccl 13819 for arbitrary sets 𝐺. (Revised by AV, 24-Feb-2025.) |
| Ref | Expression |
|---|---|
| quseccl0.e | ⊢ ∼ = (𝐺 ~QG 𝑆) |
| quseccl0.h | ⊢ 𝐻 = (𝐺 /s ∼ ) |
| quseccl0.c | ⊢ 𝐶 = (Base‘𝐺) |
| quseccl0.b | ⊢ 𝐵 = (Base‘𝐻) |
| Ref | Expression |
|---|---|
| quseccl0g | ⊢ ((𝐺 ∈ 𝑉 ∧ 𝑋 ∈ 𝐶 ∧ 𝑆 ∈ 𝑍) → [𝑋] ∼ ∈ 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | quseccl0.e | . . . 4 ⊢ ∼ = (𝐺 ~QG 𝑆) | |
| 2 | eqgex 13807 | . . . . 5 ⊢ ((𝐺 ∈ 𝑉 ∧ 𝑆 ∈ 𝑍) → (𝐺 ~QG 𝑆) ∈ V) | |
| 3 | 2 | 3adant2 1042 | . . . 4 ⊢ ((𝐺 ∈ 𝑉 ∧ 𝑋 ∈ 𝐶 ∧ 𝑆 ∈ 𝑍) → (𝐺 ~QG 𝑆) ∈ V) |
| 4 | 1, 3 | eqeltrid 2318 | . . 3 ⊢ ((𝐺 ∈ 𝑉 ∧ 𝑋 ∈ 𝐶 ∧ 𝑆 ∈ 𝑍) → ∼ ∈ V) |
| 5 | simp2 1024 | . . 3 ⊢ ((𝐺 ∈ 𝑉 ∧ 𝑋 ∈ 𝐶 ∧ 𝑆 ∈ 𝑍) → 𝑋 ∈ 𝐶) | |
| 6 | ecelqsg 6756 | . . 3 ⊢ (( ∼ ∈ V ∧ 𝑋 ∈ 𝐶) → [𝑋] ∼ ∈ (𝐶 / ∼ )) | |
| 7 | 4, 5, 6 | syl2anc 411 | . 2 ⊢ ((𝐺 ∈ 𝑉 ∧ 𝑋 ∈ 𝐶 ∧ 𝑆 ∈ 𝑍) → [𝑋] ∼ ∈ (𝐶 / ∼ )) |
| 8 | quseccl0.h | . . . . 5 ⊢ 𝐻 = (𝐺 /s ∼ ) | |
| 9 | 8 | a1i 9 | . . . 4 ⊢ ((𝐺 ∈ 𝑉 ∧ 𝑋 ∈ 𝐶 ∧ 𝑆 ∈ 𝑍) → 𝐻 = (𝐺 /s ∼ )) |
| 10 | quseccl0.c | . . . . 5 ⊢ 𝐶 = (Base‘𝐺) | |
| 11 | 10 | a1i 9 | . . . 4 ⊢ ((𝐺 ∈ 𝑉 ∧ 𝑋 ∈ 𝐶 ∧ 𝑆 ∈ 𝑍) → 𝐶 = (Base‘𝐺)) |
| 12 | simp1 1023 | . . . 4 ⊢ ((𝐺 ∈ 𝑉 ∧ 𝑋 ∈ 𝐶 ∧ 𝑆 ∈ 𝑍) → 𝐺 ∈ 𝑉) | |
| 13 | 9, 11, 4, 12 | qusbas 13409 | . . 3 ⊢ ((𝐺 ∈ 𝑉 ∧ 𝑋 ∈ 𝐶 ∧ 𝑆 ∈ 𝑍) → (𝐶 / ∼ ) = (Base‘𝐻)) |
| 14 | quseccl0.b | . . 3 ⊢ 𝐵 = (Base‘𝐻) | |
| 15 | 13, 14 | eqtr4di 2282 | . 2 ⊢ ((𝐺 ∈ 𝑉 ∧ 𝑋 ∈ 𝐶 ∧ 𝑆 ∈ 𝑍) → (𝐶 / ∼ ) = 𝐵) |
| 16 | 7, 15 | eleqtrd 2310 | 1 ⊢ ((𝐺 ∈ 𝑉 ∧ 𝑋 ∈ 𝐶 ∧ 𝑆 ∈ 𝑍) → [𝑋] ∼ ∈ 𝐵) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ w3a 1004 = wceq 1397 ∈ wcel 2202 Vcvv 2802 ‘cfv 5326 (class class class)co 6017 [cec 6699 / cqs 6700 Basecbs 13081 /s cqus 13382 ~QG cqg 13755 |
| 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 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2204 ax-14 2205 ax-ext 2213 ax-coll 4204 ax-sep 4207 ax-pow 4264 ax-pr 4299 ax-un 4530 ax-setind 4635 ax-cnex 8122 ax-resscn 8123 ax-1cn 8124 ax-1re 8125 ax-icn 8126 ax-addcl 8127 ax-addrcl 8128 ax-mulcl 8129 ax-addcom 8131 ax-addass 8133 ax-i2m1 8136 ax-0lt1 8137 ax-0id 8139 ax-rnegex 8140 ax-pre-ltirr 8143 ax-pre-lttrn 8145 ax-pre-ltadd 8147 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-fal 1403 df-nf 1509 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ne 2403 df-nel 2498 df-ral 2515 df-rex 2516 df-reu 2517 df-rab 2519 df-v 2804 df-sbc 3032 df-csb 3128 df-dif 3202 df-un 3204 df-in 3206 df-ss 3213 df-nul 3495 df-pw 3654 df-sn 3675 df-pr 3676 df-tp 3677 df-op 3678 df-uni 3894 df-int 3929 df-iun 3972 df-br 4089 df-opab 4151 df-mpt 4152 df-id 4390 df-xp 4731 df-rel 4732 df-cnv 4733 df-co 4734 df-dm 4735 df-rn 4736 df-res 4737 df-ima 4738 df-iota 5286 df-fun 5328 df-fn 5329 df-f 5330 df-f1 5331 df-fo 5332 df-f1o 5333 df-fv 5334 df-ov 6020 df-oprab 6021 df-mpo 6022 df-ec 6703 df-qs 6707 df-pnf 8215 df-mnf 8216 df-ltxr 8218 df-inn 9143 df-2 9201 df-3 9202 df-ndx 13084 df-slot 13085 df-base 13087 df-plusg 13172 df-mulr 13173 df-iimas 13384 df-qus 13385 df-eqg 13758 |
| This theorem is referenced by: quseccl 13819 ecqusaddcl 13825 |
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