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Mirrors > Home > MPE Home > Th. List > orbstafun | Structured version Visualization version GIF version |
Description: Existence and uniqueness for the function of orbsta 18707. (Contributed by Mario Carneiro, 15-Jan-2015.) (Proof shortened by Mario Carneiro, 23-Dec-2016.) |
Ref | Expression |
---|---|
gasta.1 | ⊢ 𝑋 = (Base‘𝐺) |
gasta.2 | ⊢ 𝐻 = {𝑢 ∈ 𝑋 ∣ (𝑢 ⊕ 𝐴) = 𝐴} |
orbsta.r | ⊢ ∼ = (𝐺 ~QG 𝐻) |
orbsta.f | ⊢ 𝐹 = ran (𝑘 ∈ 𝑋 ↦ 〈[𝑘] ∼ , (𝑘 ⊕ 𝐴)〉) |
Ref | Expression |
---|---|
orbstafun | ⊢ (( ⊕ ∈ (𝐺 GrpAct 𝑌) ∧ 𝐴 ∈ 𝑌) → Fun 𝐹) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | orbsta.f | . 2 ⊢ 𝐹 = ran (𝑘 ∈ 𝑋 ↦ 〈[𝑘] ∼ , (𝑘 ⊕ 𝐴)〉) | |
2 | ovexd 7248 | . 2 ⊢ ((( ⊕ ∈ (𝐺 GrpAct 𝑌) ∧ 𝐴 ∈ 𝑌) ∧ 𝑘 ∈ 𝑋) → (𝑘 ⊕ 𝐴) ∈ V) | |
3 | gasta.1 | . . . 4 ⊢ 𝑋 = (Base‘𝐺) | |
4 | gasta.2 | . . . 4 ⊢ 𝐻 = {𝑢 ∈ 𝑋 ∣ (𝑢 ⊕ 𝐴) = 𝐴} | |
5 | 3, 4 | gastacl 18703 | . . 3 ⊢ (( ⊕ ∈ (𝐺 GrpAct 𝑌) ∧ 𝐴 ∈ 𝑌) → 𝐻 ∈ (SubGrp‘𝐺)) |
6 | orbsta.r | . . . 4 ⊢ ∼ = (𝐺 ~QG 𝐻) | |
7 | 3, 6 | eqger 18594 | . . 3 ⊢ (𝐻 ∈ (SubGrp‘𝐺) → ∼ Er 𝑋) |
8 | 5, 7 | syl 17 | . 2 ⊢ (( ⊕ ∈ (𝐺 GrpAct 𝑌) ∧ 𝐴 ∈ 𝑌) → ∼ Er 𝑋) |
9 | 3 | fvexi 6731 | . . 3 ⊢ 𝑋 ∈ V |
10 | 9 | a1i 11 | . 2 ⊢ (( ⊕ ∈ (𝐺 GrpAct 𝑌) ∧ 𝐴 ∈ 𝑌) → 𝑋 ∈ V) |
11 | oveq1 7220 | . 2 ⊢ (𝑘 = ℎ → (𝑘 ⊕ 𝐴) = (ℎ ⊕ 𝐴)) | |
12 | simpr 488 | . . 3 ⊢ ((( ⊕ ∈ (𝐺 GrpAct 𝑌) ∧ 𝐴 ∈ 𝑌) ∧ 𝑘 ∼ ℎ) → 𝑘 ∼ ℎ) | |
13 | subgrcl 18548 | . . . . . . . . 9 ⊢ (𝐻 ∈ (SubGrp‘𝐺) → 𝐺 ∈ Grp) | |
14 | 3 | subgss 18544 | . . . . . . . . 9 ⊢ (𝐻 ∈ (SubGrp‘𝐺) → 𝐻 ⊆ 𝑋) |
15 | eqid 2737 | . . . . . . . . . 10 ⊢ (invg‘𝐺) = (invg‘𝐺) | |
16 | eqid 2737 | . . . . . . . . . 10 ⊢ (+g‘𝐺) = (+g‘𝐺) | |
17 | 3, 15, 16, 6 | eqgval 18593 | . . . . . . . . 9 ⊢ ((𝐺 ∈ Grp ∧ 𝐻 ⊆ 𝑋) → (𝑘 ∼ ℎ ↔ (𝑘 ∈ 𝑋 ∧ ℎ ∈ 𝑋 ∧ (((invg‘𝐺)‘𝑘)(+g‘𝐺)ℎ) ∈ 𝐻))) |
18 | 13, 14, 17 | syl2anc 587 | . . . . . . . 8 ⊢ (𝐻 ∈ (SubGrp‘𝐺) → (𝑘 ∼ ℎ ↔ (𝑘 ∈ 𝑋 ∧ ℎ ∈ 𝑋 ∧ (((invg‘𝐺)‘𝑘)(+g‘𝐺)ℎ) ∈ 𝐻))) |
19 | 5, 18 | syl 17 | . . . . . . 7 ⊢ (( ⊕ ∈ (𝐺 GrpAct 𝑌) ∧ 𝐴 ∈ 𝑌) → (𝑘 ∼ ℎ ↔ (𝑘 ∈ 𝑋 ∧ ℎ ∈ 𝑋 ∧ (((invg‘𝐺)‘𝑘)(+g‘𝐺)ℎ) ∈ 𝐻))) |
20 | 19 | biimpa 480 | . . . . . 6 ⊢ ((( ⊕ ∈ (𝐺 GrpAct 𝑌) ∧ 𝐴 ∈ 𝑌) ∧ 𝑘 ∼ ℎ) → (𝑘 ∈ 𝑋 ∧ ℎ ∈ 𝑋 ∧ (((invg‘𝐺)‘𝑘)(+g‘𝐺)ℎ) ∈ 𝐻)) |
21 | 20 | simp1d 1144 | . . . . 5 ⊢ ((( ⊕ ∈ (𝐺 GrpAct 𝑌) ∧ 𝐴 ∈ 𝑌) ∧ 𝑘 ∼ ℎ) → 𝑘 ∈ 𝑋) |
22 | 20 | simp2d 1145 | . . . . 5 ⊢ ((( ⊕ ∈ (𝐺 GrpAct 𝑌) ∧ 𝐴 ∈ 𝑌) ∧ 𝑘 ∼ ℎ) → ℎ ∈ 𝑋) |
23 | 21, 22 | jca 515 | . . . 4 ⊢ ((( ⊕ ∈ (𝐺 GrpAct 𝑌) ∧ 𝐴 ∈ 𝑌) ∧ 𝑘 ∼ ℎ) → (𝑘 ∈ 𝑋 ∧ ℎ ∈ 𝑋)) |
24 | 3, 4, 6 | gastacos 18704 | . . . 4 ⊢ ((( ⊕ ∈ (𝐺 GrpAct 𝑌) ∧ 𝐴 ∈ 𝑌) ∧ (𝑘 ∈ 𝑋 ∧ ℎ ∈ 𝑋)) → (𝑘 ∼ ℎ ↔ (𝑘 ⊕ 𝐴) = (ℎ ⊕ 𝐴))) |
25 | 23, 24 | syldan 594 | . . 3 ⊢ ((( ⊕ ∈ (𝐺 GrpAct 𝑌) ∧ 𝐴 ∈ 𝑌) ∧ 𝑘 ∼ ℎ) → (𝑘 ∼ ℎ ↔ (𝑘 ⊕ 𝐴) = (ℎ ⊕ 𝐴))) |
26 | 12, 25 | mpbid 235 | . 2 ⊢ ((( ⊕ ∈ (𝐺 GrpAct 𝑌) ∧ 𝐴 ∈ 𝑌) ∧ 𝑘 ∼ ℎ) → (𝑘 ⊕ 𝐴) = (ℎ ⊕ 𝐴)) |
27 | 1, 2, 8, 10, 11, 26 | qliftfund 8485 | 1 ⊢ (( ⊕ ∈ (𝐺 GrpAct 𝑌) ∧ 𝐴 ∈ 𝑌) → Fun 𝐹) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 209 ∧ wa 399 ∧ w3a 1089 = wceq 1543 ∈ wcel 2110 {crab 3065 Vcvv 3408 ⊆ wss 3866 〈cop 4547 class class class wbr 5053 ↦ cmpt 5135 ran crn 5552 Fun wfun 6374 ‘cfv 6380 (class class class)co 7213 Er wer 8388 [cec 8389 Basecbs 16760 +gcplusg 16802 Grpcgrp 18365 invgcminusg 18366 SubGrpcsubg 18537 ~QG cqg 18539 GrpAct cga 18683 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2016 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2158 ax-12 2175 ax-ext 2708 ax-sep 5192 ax-nul 5199 ax-pow 5258 ax-pr 5322 ax-un 7523 ax-cnex 10785 ax-resscn 10786 ax-1cn 10787 ax-icn 10788 ax-addcl 10789 ax-addrcl 10790 ax-mulcl 10791 ax-mulrcl 10792 ax-mulcom 10793 ax-addass 10794 ax-mulass 10795 ax-distr 10796 ax-i2m1 10797 ax-1ne0 10798 ax-1rid 10799 ax-rnegex 10800 ax-rrecex 10801 ax-cnre 10802 ax-pre-lttri 10803 ax-pre-lttrn 10804 ax-pre-ltadd 10805 ax-pre-mulgt0 10806 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3or 1090 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-nf 1792 df-sb 2071 df-mo 2539 df-eu 2568 df-clab 2715 df-cleq 2729 df-clel 2816 df-nfc 2886 df-ne 2941 df-nel 3047 df-ral 3066 df-rex 3067 df-reu 3068 df-rmo 3069 df-rab 3070 df-v 3410 df-sbc 3695 df-csb 3812 df-dif 3869 df-un 3871 df-in 3873 df-ss 3883 df-pss 3885 df-nul 4238 df-if 4440 df-pw 4515 df-sn 4542 df-pr 4544 df-tp 4546 df-op 4548 df-uni 4820 df-iun 4906 df-br 5054 df-opab 5116 df-mpt 5136 df-tr 5162 df-id 5455 df-eprel 5460 df-po 5468 df-so 5469 df-fr 5509 df-we 5511 df-xp 5557 df-rel 5558 df-cnv 5559 df-co 5560 df-dm 5561 df-rn 5562 df-res 5563 df-ima 5564 df-pred 6160 df-ord 6216 df-on 6217 df-lim 6218 df-suc 6219 df-iota 6338 df-fun 6382 df-fn 6383 df-f 6384 df-f1 6385 df-fo 6386 df-f1o 6387 df-fv 6388 df-riota 7170 df-ov 7216 df-oprab 7217 df-mpo 7218 df-om 7645 df-1st 7761 df-2nd 7762 df-wrecs 8047 df-recs 8108 df-rdg 8146 df-er 8391 df-ec 8393 df-qs 8397 df-map 8510 df-en 8627 df-dom 8628 df-sdom 8629 df-pnf 10869 df-mnf 10870 df-xr 10871 df-ltxr 10872 df-le 10873 df-sub 11064 df-neg 11065 df-nn 11831 df-2 11893 df-sets 16717 df-slot 16735 df-ndx 16745 df-base 16761 df-ress 16785 df-plusg 16815 df-0g 16946 df-mgm 18114 df-sgrp 18163 df-mnd 18174 df-grp 18368 df-minusg 18369 df-subg 18540 df-eqg 18542 df-ga 18684 |
This theorem is referenced by: orbstaval 18706 orbsta 18707 |
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