| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > ghmqusnsglem2 | Structured version Visualization version GIF version | ||
| Description: Lemma for ghmqusnsg 19435. (Contributed by Thierry Arnoux, 13-May-2025.) |
| Ref | Expression |
|---|---|
| ghmqusnsg.0 | ⊢ 0 = (0g‘𝐻) |
| ghmqusnsg.f | ⊢ (𝜑 → 𝐹 ∈ (𝐺 GrpHom 𝐻)) |
| ghmqusnsg.k | ⊢ 𝐾 = (◡𝐹 “ { 0 }) |
| ghmqusnsg.q | ⊢ 𝑄 = (𝐺 /s (𝐺 ~QG 𝑁)) |
| ghmqusnsg.j | ⊢ 𝐽 = (𝑞 ∈ (Base‘𝑄) ↦ ∪ (𝐹 “ 𝑞)) |
| ghmqusnsg.n | ⊢ (𝜑 → 𝑁 ⊆ 𝐾) |
| ghmqusnsg.1 | ⊢ (𝜑 → 𝑁 ∈ (NrmSGrp‘𝐺)) |
| ghmqusnsglem2.y | ⊢ (𝜑 → 𝑌 ∈ (Base‘𝑄)) |
| Ref | Expression |
|---|---|
| ghmqusnsglem2 | ⊢ (𝜑 → ∃𝑥 ∈ 𝑌 (𝐽‘𝑌) = (𝐹‘𝑥)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ghmqusnsglem2.y | . . 3 ⊢ (𝜑 → 𝑌 ∈ (Base‘𝑄)) | |
| 2 | ghmqusnsg.q | . . . . . 6 ⊢ 𝑄 = (𝐺 /s (𝐺 ~QG 𝑁)) | |
| 3 | 2 | a1i 11 | . . . . 5 ⊢ (𝜑 → 𝑄 = (𝐺 /s (𝐺 ~QG 𝑁))) |
| 4 | eqidd 2761 | . . . . 5 ⊢ (𝜑 → (Base‘𝐺) = (Base‘𝐺)) | |
| 5 | ovexd 7451 | . . . . 5 ⊢ (𝜑 → (𝐺 ~QG 𝑁) ∈ V) | |
| 6 | ghmqusnsg.f | . . . . . 6 ⊢ (𝜑 → 𝐹 ∈ (𝐺 GrpHom 𝐻)) | |
| 7 | ghmgrp1 19371 | . . . . . 6 ⊢ (𝐹 ∈ (𝐺 GrpHom 𝐻) → 𝐺 ∈ Grp) | |
| 8 | 6, 7 | syl 18 | . . . . 5 ⊢ (𝜑 → 𝐺 ∈ Grp) |
| 9 | 3, 4, 5, 8 | qusbas 17656 | . . . 4 ⊢ (𝜑 → ((Base‘𝐺) / (𝐺 ~QG 𝑁)) = (Base‘𝑄)) |
| 10 | 1, 9 | eleqtrrd 2863 | . . 3 ⊢ (𝜑 → 𝑌 ∈ ((Base‘𝐺) / (𝐺 ~QG 𝑁))) |
| 11 | elqsg 8770 | . . . 4 ⊢ (𝑌 ∈ (Base‘𝑄) → (𝑌 ∈ ((Base‘𝐺) / (𝐺 ~QG 𝑁)) ↔ ∃𝑥 ∈ (Base‘𝐺)𝑌 = [𝑥](𝐺 ~QG 𝑁))) | |
| 12 | 11 | biimpa 482 | . . 3 ⊢ ((𝑌 ∈ (Base‘𝑄) ∧ 𝑌 ∈ ((Base‘𝐺) / (𝐺 ~QG 𝑁))) → ∃𝑥 ∈ (Base‘𝐺)𝑌 = [𝑥](𝐺 ~QG 𝑁)) |
| 13 | 1, 10, 12 | syl2anc 596 | . 2 ⊢ (𝜑 → ∃𝑥 ∈ (Base‘𝐺)𝑌 = [𝑥](𝐺 ~QG 𝑁)) |
| 14 | ghmqusnsg.1 | . . . . . . . . 9 ⊢ (𝜑 → 𝑁 ∈ (NrmSGrp‘𝐺)) | |
| 15 | nsgsubg 19307 | . . . . . . . . 9 ⊢ (𝑁 ∈ (NrmSGrp‘𝐺) → 𝑁 ∈ (SubGrp‘𝐺)) | |
| 16 | eqid 2760 | . . . . . . . . . 10 ⊢ (Base‘𝐺) = (Base‘𝐺) | |
| 17 | eqid 2760 | . . . . . . . . . 10 ⊢ (𝐺 ~QG 𝑁) = (𝐺 ~QG 𝑁) | |
| 18 | 16, 17 | eqger 19329 | . . . . . . . . 9 ⊢ (𝑁 ∈ (SubGrp‘𝐺) → (𝐺 ~QG 𝑁) Er (Base‘𝐺)) |
| 19 | 14, 15, 18 | 3syl 19 | . . . . . . . 8 ⊢ (𝜑 → (𝐺 ~QG 𝑁) Er (Base‘𝐺)) |
| 20 | 19 | ad2antrr 739 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ (Base‘𝐺)) ∧ 𝑌 = [𝑥](𝐺 ~QG 𝑁)) → (𝐺 ~QG 𝑁) Er (Base‘𝐺)) |
| 21 | simplr 781 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ (Base‘𝐺)) ∧ 𝑌 = [𝑥](𝐺 ~QG 𝑁)) → 𝑥 ∈ (Base‘𝐺)) | |
| 22 | ecref 8749 | . . . . . . 7 ⊢ (((𝐺 ~QG 𝑁) Er (Base‘𝐺) ∧ 𝑥 ∈ (Base‘𝐺)) → 𝑥 ∈ [𝑥](𝐺 ~QG 𝑁)) | |
| 23 | 20, 21, 22 | syl2anc 596 | . . . . . 6 ⊢ (((𝜑 ∧ 𝑥 ∈ (Base‘𝐺)) ∧ 𝑌 = [𝑥](𝐺 ~QG 𝑁)) → 𝑥 ∈ [𝑥](𝐺 ~QG 𝑁)) |
| 24 | simpr 490 | . . . . . 6 ⊢ (((𝜑 ∧ 𝑥 ∈ (Base‘𝐺)) ∧ 𝑌 = [𝑥](𝐺 ~QG 𝑁)) → 𝑌 = [𝑥](𝐺 ~QG 𝑁)) | |
| 25 | 23, 24 | eleqtrrd 2863 | . . . . 5 ⊢ (((𝜑 ∧ 𝑥 ∈ (Base‘𝐺)) ∧ 𝑌 = [𝑥](𝐺 ~QG 𝑁)) → 𝑥 ∈ 𝑌) |
| 26 | 24 | fveq2d 6885 | . . . . . 6 ⊢ (((𝜑 ∧ 𝑥 ∈ (Base‘𝐺)) ∧ 𝑌 = [𝑥](𝐺 ~QG 𝑁)) → (𝐽‘𝑌) = (𝐽‘[𝑥](𝐺 ~QG 𝑁))) |
| 27 | ghmqusnsg.0 | . . . . . . 7 ⊢ 0 = (0g‘𝐻) | |
| 28 | 6 | ad2antrr 739 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ (Base‘𝐺)) ∧ 𝑌 = [𝑥](𝐺 ~QG 𝑁)) → 𝐹 ∈ (𝐺 GrpHom 𝐻)) |
| 29 | ghmqusnsg.k | . . . . . . 7 ⊢ 𝐾 = (◡𝐹 “ { 0 }) | |
| 30 | ghmqusnsg.j | . . . . . . 7 ⊢ 𝐽 = (𝑞 ∈ (Base‘𝑄) ↦ ∪ (𝐹 “ 𝑞)) | |
| 31 | ghmqusnsg.n | . . . . . . . 8 ⊢ (𝜑 → 𝑁 ⊆ 𝐾) | |
| 32 | 31 | ad2antrr 739 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ (Base‘𝐺)) ∧ 𝑌 = [𝑥](𝐺 ~QG 𝑁)) → 𝑁 ⊆ 𝐾) |
| 33 | 14 | ad2antrr 739 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ (Base‘𝐺)) ∧ 𝑌 = [𝑥](𝐺 ~QG 𝑁)) → 𝑁 ∈ (NrmSGrp‘𝐺)) |
| 34 | 27, 28, 29, 2, 30, 32, 33, 21 | ghmqusnsglem1 19433 | . . . . . 6 ⊢ (((𝜑 ∧ 𝑥 ∈ (Base‘𝐺)) ∧ 𝑌 = [𝑥](𝐺 ~QG 𝑁)) → (𝐽‘[𝑥](𝐺 ~QG 𝑁)) = (𝐹‘𝑥)) |
| 35 | 26, 34 | eqtrd 2795 | . . . . 5 ⊢ (((𝜑 ∧ 𝑥 ∈ (Base‘𝐺)) ∧ 𝑌 = [𝑥](𝐺 ~QG 𝑁)) → (𝐽‘𝑌) = (𝐹‘𝑥)) |
| 36 | 25, 35 | jca 521 | . . . 4 ⊢ (((𝜑 ∧ 𝑥 ∈ (Base‘𝐺)) ∧ 𝑌 = [𝑥](𝐺 ~QG 𝑁)) → (𝑥 ∈ 𝑌 ∧ (𝐽‘𝑌) = (𝐹‘𝑥))) |
| 37 | 36 | expl 463 | . . 3 ⊢ (𝜑 → ((𝑥 ∈ (Base‘𝐺) ∧ 𝑌 = [𝑥](𝐺 ~QG 𝑁)) → (𝑥 ∈ 𝑌 ∧ (𝐽‘𝑌) = (𝐹‘𝑥)))) |
| 38 | 37 | reximdv2 3172 | . 2 ⊢ (𝜑 → (∃𝑥 ∈ (Base‘𝐺)𝑌 = [𝑥](𝐺 ~QG 𝑁) → ∃𝑥 ∈ 𝑌 (𝐽‘𝑌) = (𝐹‘𝑥))) |
| 39 | 13, 38 | mpd 16 | 1 ⊢ (𝜑 → ∃𝑥 ∈ 𝑌 (𝐽‘𝑌) = (𝐹‘𝑥)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2145 ∃wrex 3086 Vcvv 3450 ⊆ wss 3899 {csn 4584 ∪ cuni 4867 ↦ cmpt 5186 ◡ccnv 5654 “ cima 5658 ‘cfv 6535 (class class class)co 7416 Er wer 8700 [cec 8701 / cqs 8702 Basecbs 17326 0gc0g 17549 /s cqus 17616 Grpcgrp 19083 SubGrpcsubg 19269 NrmSGrpcnsg 19270 ~QG cqg 19271 GrpHom cghm 19366 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-rep 5232 ax-sep 5251 ax-nul 5263 ax-pow 5330 ax-pr 5398 ax-un 7742 ax-cnex 11205 ax-resscn 11206 ax-1cn 11207 ax-icn 11208 ax-addcl 11209 ax-addrcl 11210 ax-mulcl 11211 ax-mulrcl 11212 ax-mulcom 11213 ax-addass 11214 ax-mulass 11215 ax-distr 11216 ax-i2m1 11217 ax-1ne0 11218 ax-1rid 11219 ax-rnegex 11220 ax-rrecex 11221 ax-cnre 11222 ax-pre-lttri 11223 ax-pre-lttrn 11224 ax-pre-ltadd 11225 ax-pre-mulgt0 11226 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-tp 4589 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5550 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-we 5610 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-pred 6301 df-ord 6362 df-on 6363 df-lim 6364 df-suc 6365 df-iota 6491 df-fun 6537 df-fn 6538 df-f 6539 df-f1 6540 df-fo 6541 df-f1o 6542 df-fv 6543 df-riota 7373 df-ov 7419 df-oprab 7420 df-mpo 7421 df-om 7869 df-1st 7992 df-2nd 7993 df-frecs 8285 df-wrecs 8316 df-recs 8365 df-rdg 8404 df-1o 8462 df-er 8703 df-ec 8705 df-qs 8709 df-map 8835 df-en 8960 df-dom 8961 df-sdom 8962 df-fin 8963 df-sup 9419 df-inf 9420 df-pnf 11294 df-mnf 11295 df-xr 11296 df-ltxr 11297 df-le 11298 df-sub 11492 df-neg 11493 df-nn 12283 df-2 12352 df-3 12353 df-4 12354 df-5 12355 df-6 12356 df-7 12357 df-8 12358 df-9 12359 df-n0 12554 df-z 12641 df-dec 12762 df-uz 12913 df-fz 13587 df-struct 17264 df-sets 17281 df-slot 17299 df-ndx 17311 df-base 17327 df-ress 17348 df-plusg 17380 df-mulr 17381 df-sca 17383 df-vsca 17384 df-ip 17385 df-tset 17386 df-ple 17387 df-ds 17389 df-0g 17551 df-imas 17619 df-qus 17620 df-mgm 18755 df-sgrp 18847 df-mnd 18863 df-grp 19086 df-minusg 19087 df-subg 19272 df-nsg 19273 df-eqg 19274 df-ghm 19367 |
| This theorem is used by: ghmqusnsg 19435 rhmqusnsg 21520 |
| Copyright terms: Public domain | W3C validator |