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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 13950 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 13938 | . . . . 5 ⊢ ((𝐺 ∈ 𝑉 ∧ 𝑆 ∈ 𝑍) → (𝐺 ~QG 𝑆) ∈ V) | |
| 3 | 2 | 3adant2 1043 | . . . 4 ⊢ ((𝐺 ∈ 𝑉 ∧ 𝑋 ∈ 𝐶 ∧ 𝑆 ∈ 𝑍) → (𝐺 ~QG 𝑆) ∈ V) |
| 4 | 1, 3 | eqeltrid 2319 | . . 3 ⊢ ((𝐺 ∈ 𝑉 ∧ 𝑋 ∈ 𝐶 ∧ 𝑆 ∈ 𝑍) → ∼ ∈ V) |
| 5 | simp2 1025 | . . 3 ⊢ ((𝐺 ∈ 𝑉 ∧ 𝑋 ∈ 𝐶 ∧ 𝑆 ∈ 𝑍) → 𝑋 ∈ 𝐶) | |
| 6 | ecelqsg 6822 | . . 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 1024 | . . . 4 ⊢ ((𝐺 ∈ 𝑉 ∧ 𝑋 ∈ 𝐶 ∧ 𝑆 ∈ 𝑍) → 𝐺 ∈ 𝑉) | |
| 13 | 9, 11, 4, 12 | qusbas 13540 | . . 3 ⊢ ((𝐺 ∈ 𝑉 ∧ 𝑋 ∈ 𝐶 ∧ 𝑆 ∈ 𝑍) → (𝐶 / ∼ ) = (Base‘𝐻)) |
| 14 | quseccl0.b | . . 3 ⊢ 𝐵 = (Base‘𝐻) | |
| 15 | 13, 14 | eqtr4di 2283 | . 2 ⊢ ((𝐺 ∈ 𝑉 ∧ 𝑋 ∈ 𝐶 ∧ 𝑆 ∈ 𝑍) → (𝐶 / ∼ ) = 𝐵) |
| 16 | 7, 15 | eleqtrd 2311 | 1 ⊢ ((𝐺 ∈ 𝑉 ∧ 𝑋 ∈ 𝐶 ∧ 𝑆 ∈ 𝑍) → [𝑋] ∼ ∈ 𝐵) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ w3a 1005 = wceq 1398 ∈ wcel 2203 Vcvv 2813 ‘cfv 5352 (class class class)co 6050 [cec 6765 / cqs 6766 Basecbs 13212 /s cqus 13513 ~QG cqg 13886 |
| 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 2205 ax-14 2206 ax-ext 2214 ax-coll 4225 ax-sep 4228 ax-pow 4287 ax-pr 4322 ax-un 4554 ax-setind 4659 ax-cnex 8218 ax-resscn 8219 ax-1cn 8220 ax-1re 8221 ax-icn 8222 ax-addcl 8223 ax-addrcl 8224 ax-mulcl 8225 ax-addcom 8227 ax-addass 8229 ax-i2m1 8232 ax-0lt1 8233 ax-0id 8235 ax-rnegex 8236 ax-pre-ltirr 8239 ax-pre-lttrn 8241 ax-pre-ltadd 8243 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2083 df-mo 2084 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-ne 2413 df-nel 2508 df-ral 2525 df-rex 2526 df-reu 2527 df-rab 2529 df-v 2815 df-sbc 3043 df-csb 3139 df-dif 3213 df-un 3215 df-in 3217 df-ss 3224 df-nul 3509 df-pw 3671 df-sn 3695 df-pr 3696 df-tp 3697 df-op 3698 df-uni 3915 df-int 3950 df-iun 3993 df-br 4110 df-opab 4172 df-mpt 4173 df-id 4414 df-xp 4755 df-rel 4756 df-cnv 4757 df-co 4758 df-dm 4759 df-rn 4760 df-res 4761 df-ima 4762 df-iota 5312 df-fun 5354 df-fn 5355 df-f 5356 df-f1 5357 df-fo 5358 df-f1o 5359 df-fv 5360 df-ov 6053 df-oprab 6054 df-mpo 6055 df-ec 6769 df-qs 6773 df-pnf 8310 df-mnf 8311 df-ltxr 8313 df-inn 9238 df-2 9296 df-3 9297 df-ndx 13215 df-slot 13216 df-base 13218 df-plusg 13303 df-mulr 13304 df-iimas 13515 df-qus 13516 df-eqg 13889 |
| This theorem is referenced by: quseccl 13950 ecqusaddcl 13956 |
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