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Mirrors > Home > ILE Home > Th. List > mulgsubcl | GIF version |
Description: Closure of the group multiple (exponentiation) operation in a subgroup. (Contributed by Mario Carneiro, 10-Jan-2015.) |
Ref | Expression |
---|---|
mulgnnsubcl.b | ⊢ 𝐵 = (Base‘𝐺) |
mulgnnsubcl.t | ⊢ · = (.g‘𝐺) |
mulgnnsubcl.p | ⊢ + = (+g‘𝐺) |
mulgnnsubcl.g | ⊢ (𝜑 → 𝐺 ∈ 𝑉) |
mulgnnsubcl.s | ⊢ (𝜑 → 𝑆 ⊆ 𝐵) |
mulgnnsubcl.c | ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆) → (𝑥 + 𝑦) ∈ 𝑆) |
mulgnn0subcl.z | ⊢ 0 = (0g‘𝐺) |
mulgnn0subcl.c | ⊢ (𝜑 → 0 ∈ 𝑆) |
mulgsubcl.i | ⊢ 𝐼 = (invg‘𝐺) |
mulgsubcl.c | ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑆) → (𝐼‘𝑥) ∈ 𝑆) |
Ref | Expression |
---|---|
mulgsubcl | ⊢ ((𝜑 ∧ 𝑁 ∈ ℤ ∧ 𝑋 ∈ 𝑆) → (𝑁 · 𝑋) ∈ 𝑆) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | mulgnnsubcl.b | . . . . . 6 ⊢ 𝐵 = (Base‘𝐺) | |
2 | mulgnnsubcl.t | . . . . . 6 ⊢ · = (.g‘𝐺) | |
3 | mulgnnsubcl.p | . . . . . 6 ⊢ + = (+g‘𝐺) | |
4 | mulgnnsubcl.g | . . . . . 6 ⊢ (𝜑 → 𝐺 ∈ 𝑉) | |
5 | mulgnnsubcl.s | . . . . . 6 ⊢ (𝜑 → 𝑆 ⊆ 𝐵) | |
6 | mulgnnsubcl.c | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆) → (𝑥 + 𝑦) ∈ 𝑆) | |
7 | mulgnn0subcl.z | . . . . . 6 ⊢ 0 = (0g‘𝐺) | |
8 | mulgnn0subcl.c | . . . . . 6 ⊢ (𝜑 → 0 ∈ 𝑆) | |
9 | 1, 2, 3, 4, 5, 6, 7, 8 | mulgnn0subcl 12855 | . . . . 5 ⊢ ((𝜑 ∧ 𝑁 ∈ ℕ0 ∧ 𝑋 ∈ 𝑆) → (𝑁 · 𝑋) ∈ 𝑆) |
10 | 9 | 3expa 1203 | . . . 4 ⊢ (((𝜑 ∧ 𝑁 ∈ ℕ0) ∧ 𝑋 ∈ 𝑆) → (𝑁 · 𝑋) ∈ 𝑆) |
11 | 10 | an32s 568 | . . 3 ⊢ (((𝜑 ∧ 𝑋 ∈ 𝑆) ∧ 𝑁 ∈ ℕ0) → (𝑁 · 𝑋) ∈ 𝑆) |
12 | 11 | 3adantl2 1154 | . 2 ⊢ (((𝜑 ∧ 𝑁 ∈ ℤ ∧ 𝑋 ∈ 𝑆) ∧ 𝑁 ∈ ℕ0) → (𝑁 · 𝑋) ∈ 𝑆) |
13 | simp2 998 | . . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑁 ∈ ℤ ∧ 𝑋 ∈ 𝑆) → 𝑁 ∈ ℤ) | |
14 | 13 | adantr 276 | . . . . . . . 8 ⊢ (((𝜑 ∧ 𝑁 ∈ ℤ ∧ 𝑋 ∈ 𝑆) ∧ -𝑁 ∈ ℕ) → 𝑁 ∈ ℤ) |
15 | 14 | zcnd 9347 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝑁 ∈ ℤ ∧ 𝑋 ∈ 𝑆) ∧ -𝑁 ∈ ℕ) → 𝑁 ∈ ℂ) |
16 | 15 | negnegd 8233 | . . . . . 6 ⊢ (((𝜑 ∧ 𝑁 ∈ ℤ ∧ 𝑋 ∈ 𝑆) ∧ -𝑁 ∈ ℕ) → --𝑁 = 𝑁) |
17 | 16 | oveq1d 5880 | . . . . 5 ⊢ (((𝜑 ∧ 𝑁 ∈ ℤ ∧ 𝑋 ∈ 𝑆) ∧ -𝑁 ∈ ℕ) → (--𝑁 · 𝑋) = (𝑁 · 𝑋)) |
18 | id 19 | . . . . . 6 ⊢ (-𝑁 ∈ ℕ → -𝑁 ∈ ℕ) | |
19 | 5 | 3ad2ant1 1018 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑁 ∈ ℤ ∧ 𝑋 ∈ 𝑆) → 𝑆 ⊆ 𝐵) |
20 | simp3 999 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑁 ∈ ℤ ∧ 𝑋 ∈ 𝑆) → 𝑋 ∈ 𝑆) | |
21 | 19, 20 | sseldd 3154 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑁 ∈ ℤ ∧ 𝑋 ∈ 𝑆) → 𝑋 ∈ 𝐵) |
22 | mulgsubcl.i | . . . . . . 7 ⊢ 𝐼 = (invg‘𝐺) | |
23 | 1, 2, 22 | mulgnegnn 12852 | . . . . . 6 ⊢ ((-𝑁 ∈ ℕ ∧ 𝑋 ∈ 𝐵) → (--𝑁 · 𝑋) = (𝐼‘(-𝑁 · 𝑋))) |
24 | 18, 21, 23 | syl2anr 290 | . . . . 5 ⊢ (((𝜑 ∧ 𝑁 ∈ ℤ ∧ 𝑋 ∈ 𝑆) ∧ -𝑁 ∈ ℕ) → (--𝑁 · 𝑋) = (𝐼‘(-𝑁 · 𝑋))) |
25 | 17, 24 | eqtr3d 2210 | . . . 4 ⊢ (((𝜑 ∧ 𝑁 ∈ ℤ ∧ 𝑋 ∈ 𝑆) ∧ -𝑁 ∈ ℕ) → (𝑁 · 𝑋) = (𝐼‘(-𝑁 · 𝑋))) |
26 | fveq2 5507 | . . . . . 6 ⊢ (𝑥 = (-𝑁 · 𝑋) → (𝐼‘𝑥) = (𝐼‘(-𝑁 · 𝑋))) | |
27 | 26 | eleq1d 2244 | . . . . 5 ⊢ (𝑥 = (-𝑁 · 𝑋) → ((𝐼‘𝑥) ∈ 𝑆 ↔ (𝐼‘(-𝑁 · 𝑋)) ∈ 𝑆)) |
28 | mulgsubcl.c | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑆) → (𝐼‘𝑥) ∈ 𝑆) | |
29 | 28 | ralrimiva 2548 | . . . . . . 7 ⊢ (𝜑 → ∀𝑥 ∈ 𝑆 (𝐼‘𝑥) ∈ 𝑆) |
30 | 29 | 3ad2ant1 1018 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑁 ∈ ℤ ∧ 𝑋 ∈ 𝑆) → ∀𝑥 ∈ 𝑆 (𝐼‘𝑥) ∈ 𝑆) |
31 | 30 | adantr 276 | . . . . 5 ⊢ (((𝜑 ∧ 𝑁 ∈ ℤ ∧ 𝑋 ∈ 𝑆) ∧ -𝑁 ∈ ℕ) → ∀𝑥 ∈ 𝑆 (𝐼‘𝑥) ∈ 𝑆) |
32 | 1, 2, 3, 4, 5, 6 | mulgnnsubcl 12854 | . . . . . . . 8 ⊢ ((𝜑 ∧ -𝑁 ∈ ℕ ∧ 𝑋 ∈ 𝑆) → (-𝑁 · 𝑋) ∈ 𝑆) |
33 | 32 | 3expa 1203 | . . . . . . 7 ⊢ (((𝜑 ∧ -𝑁 ∈ ℕ) ∧ 𝑋 ∈ 𝑆) → (-𝑁 · 𝑋) ∈ 𝑆) |
34 | 33 | an32s 568 | . . . . . 6 ⊢ (((𝜑 ∧ 𝑋 ∈ 𝑆) ∧ -𝑁 ∈ ℕ) → (-𝑁 · 𝑋) ∈ 𝑆) |
35 | 34 | 3adantl2 1154 | . . . . 5 ⊢ (((𝜑 ∧ 𝑁 ∈ ℤ ∧ 𝑋 ∈ 𝑆) ∧ -𝑁 ∈ ℕ) → (-𝑁 · 𝑋) ∈ 𝑆) |
36 | 27, 31, 35 | rspcdva 2844 | . . . 4 ⊢ (((𝜑 ∧ 𝑁 ∈ ℤ ∧ 𝑋 ∈ 𝑆) ∧ -𝑁 ∈ ℕ) → (𝐼‘(-𝑁 · 𝑋)) ∈ 𝑆) |
37 | 25, 36 | eqeltrd 2252 | . . 3 ⊢ (((𝜑 ∧ 𝑁 ∈ ℤ ∧ 𝑋 ∈ 𝑆) ∧ -𝑁 ∈ ℕ) → (𝑁 · 𝑋) ∈ 𝑆) |
38 | 37 | adantrl 478 | . 2 ⊢ (((𝜑 ∧ 𝑁 ∈ ℤ ∧ 𝑋 ∈ 𝑆) ∧ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) → (𝑁 · 𝑋) ∈ 𝑆) |
39 | elznn0nn 9238 | . . 3 ⊢ (𝑁 ∈ ℤ ↔ (𝑁 ∈ ℕ0 ∨ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ))) | |
40 | 13, 39 | sylib 122 | . 2 ⊢ ((𝜑 ∧ 𝑁 ∈ ℤ ∧ 𝑋 ∈ 𝑆) → (𝑁 ∈ ℕ0 ∨ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ))) |
41 | 12, 38, 40 | mpjaodan 798 | 1 ⊢ ((𝜑 ∧ 𝑁 ∈ ℤ ∧ 𝑋 ∈ 𝑆) → (𝑁 · 𝑋) ∈ 𝑆) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 104 ∨ wo 708 ∧ w3a 978 = wceq 1353 ∈ wcel 2146 ∀wral 2453 ⊆ wss 3127 ‘cfv 5208 (class class class)co 5865 ℝcr 7785 -cneg 8103 ℕcn 8890 ℕ0cn0 9147 ℤcz 9224 Basecbs 12428 +gcplusg 12492 0gc0g 12626 invgcminusg 12739 .gcmg 12842 |
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 614 ax-in2 615 ax-io 709 ax-5 1445 ax-7 1446 ax-gen 1447 ax-ie1 1491 ax-ie2 1492 ax-8 1502 ax-10 1503 ax-11 1504 ax-i12 1505 ax-bndl 1507 ax-4 1508 ax-17 1524 ax-i9 1528 ax-ial 1532 ax-i5r 1533 ax-13 2148 ax-14 2149 ax-ext 2157 ax-coll 4113 ax-sep 4116 ax-nul 4124 ax-pow 4169 ax-pr 4203 ax-un 4427 ax-setind 4530 ax-iinf 4581 ax-cnex 7877 ax-resscn 7878 ax-1cn 7879 ax-1re 7880 ax-icn 7881 ax-addcl 7882 ax-addrcl 7883 ax-mulcl 7884 ax-addcom 7886 ax-addass 7888 ax-distr 7890 ax-i2m1 7891 ax-0lt1 7892 ax-0id 7894 ax-rnegex 7895 ax-cnre 7897 ax-pre-ltirr 7898 ax-pre-ltwlin 7899 ax-pre-lttrn 7900 ax-pre-ltadd 7902 |
This theorem depends on definitions: df-bi 117 df-dc 835 df-3or 979 df-3an 980 df-tru 1356 df-fal 1359 df-nf 1459 df-sb 1761 df-eu 2027 df-mo 2028 df-clab 2162 df-cleq 2168 df-clel 2171 df-nfc 2306 df-ne 2346 df-nel 2441 df-ral 2458 df-rex 2459 df-reu 2460 df-rab 2462 df-v 2737 df-sbc 2961 df-csb 3056 df-dif 3129 df-un 3131 df-in 3133 df-ss 3140 df-nul 3421 df-if 3533 df-pw 3574 df-sn 3595 df-pr 3596 df-op 3598 df-uni 3806 df-int 3841 df-iun 3884 df-br 3999 df-opab 4060 df-mpt 4061 df-tr 4097 df-id 4287 df-iord 4360 df-on 4362 df-ilim 4363 df-suc 4365 df-iom 4584 df-xp 4626 df-rel 4627 df-cnv 4628 df-co 4629 df-dm 4630 df-rn 4631 df-res 4632 df-ima 4633 df-iota 5170 df-fun 5210 df-fn 5211 df-f 5212 df-f1 5213 df-fo 5214 df-f1o 5215 df-fv 5216 df-riota 5821 df-ov 5868 df-oprab 5869 df-mpo 5870 df-1st 6131 df-2nd 6132 df-recs 6296 df-frec 6382 df-pnf 7968 df-mnf 7969 df-xr 7970 df-ltxr 7971 df-le 7972 df-sub 8104 df-neg 8105 df-inn 8891 df-2 8949 df-n0 9148 df-z 9225 df-uz 9500 df-seqfrec 10414 df-ndx 12431 df-slot 12432 df-base 12434 df-plusg 12505 df-0g 12628 df-minusg 12742 df-mulg 12843 |
This theorem is referenced by: mulgcl 12859 |
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