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| Mirrors > Home > ILE Home > Th. List > mulgex | GIF version | ||
| Description: Existence of the group multiple operation. (Contributed by Jim Kingdon, 22-Apr-2025.) |
| Ref | Expression |
|---|---|
| mulgex | ⊢ (𝐺 ∈ 𝑉 → (.g‘𝐺) ∈ V) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2229 | . . 3 ⊢ (Base‘𝐺) = (Base‘𝐺) | |
| 2 | eqid 2229 | . . 3 ⊢ (+g‘𝐺) = (+g‘𝐺) | |
| 3 | eqid 2229 | . . 3 ⊢ (0g‘𝐺) = (0g‘𝐺) | |
| 4 | eqid 2229 | . . 3 ⊢ (invg‘𝐺) = (invg‘𝐺) | |
| 5 | eqid 2229 | . . 3 ⊢ (.g‘𝐺) = (.g‘𝐺) | |
| 6 | 1, 2, 3, 4, 5 | mulgfvalg 13701 | . 2 ⊢ (𝐺 ∈ 𝑉 → (.g‘𝐺) = (𝑛 ∈ ℤ, 𝑥 ∈ (Base‘𝐺) ↦ if(𝑛 = 0, (0g‘𝐺), if(0 < 𝑛, (seq1((+g‘𝐺), (ℕ × {𝑥}))‘𝑛), ((invg‘𝐺)‘(seq1((+g‘𝐺), (ℕ × {𝑥}))‘-𝑛)))))) |
| 7 | zex 9481 | . . 3 ⊢ ℤ ∈ V | |
| 8 | basfn 13134 | . . . 4 ⊢ Base Fn V | |
| 9 | elex 2812 | . . . 4 ⊢ (𝐺 ∈ 𝑉 → 𝐺 ∈ V) | |
| 10 | funfvex 5652 | . . . . 5 ⊢ ((Fun Base ∧ 𝐺 ∈ dom Base) → (Base‘𝐺) ∈ V) | |
| 11 | 10 | funfni 5429 | . . . 4 ⊢ ((Base Fn V ∧ 𝐺 ∈ V) → (Base‘𝐺) ∈ V) |
| 12 | 8, 9, 11 | sylancr 414 | . . 3 ⊢ (𝐺 ∈ 𝑉 → (Base‘𝐺) ∈ V) |
| 13 | mpoexga 6372 | . . 3 ⊢ ((ℤ ∈ V ∧ (Base‘𝐺) ∈ V) → (𝑛 ∈ ℤ, 𝑥 ∈ (Base‘𝐺) ↦ if(𝑛 = 0, (0g‘𝐺), if(0 < 𝑛, (seq1((+g‘𝐺), (ℕ × {𝑥}))‘𝑛), ((invg‘𝐺)‘(seq1((+g‘𝐺), (ℕ × {𝑥}))‘-𝑛))))) ∈ V) | |
| 14 | 7, 12, 13 | sylancr 414 | . 2 ⊢ (𝐺 ∈ 𝑉 → (𝑛 ∈ ℤ, 𝑥 ∈ (Base‘𝐺) ↦ if(𝑛 = 0, (0g‘𝐺), if(0 < 𝑛, (seq1((+g‘𝐺), (ℕ × {𝑥}))‘𝑛), ((invg‘𝐺)‘(seq1((+g‘𝐺), (ℕ × {𝑥}))‘-𝑛))))) ∈ V) |
| 15 | 6, 14 | eqeltrd 2306 | 1 ⊢ (𝐺 ∈ 𝑉 → (.g‘𝐺) ∈ V) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1395 ∈ wcel 2200 Vcvv 2800 ifcif 3603 {csn 3667 class class class wbr 4086 × cxp 4721 Fn wfn 5319 ‘cfv 5324 ∈ cmpo 6015 0cc0 8025 1c1 8026 < clt 8207 -cneg 8344 ℕcn 9136 ℤcz 9472 seqcseq 10702 Basecbs 13075 +gcplusg 13153 0gc0g 13332 invgcminusg 13577 .gcmg 13699 |
| 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-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-coll 4202 ax-sep 4205 ax-pow 4262 ax-pr 4297 ax-un 4528 ax-setind 4633 ax-iinf 4684 ax-cnex 8116 ax-resscn 8117 ax-1re 8119 ax-addrcl 8122 |
| This theorem depends on definitions: df-bi 117 df-3or 1003 df-3an 1004 df-tru 1398 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ral 2513 df-rex 2514 df-reu 2515 df-rab 2517 df-v 2802 df-sbc 3030 df-csb 3126 df-un 3202 df-in 3204 df-ss 3211 df-if 3604 df-pw 3652 df-sn 3673 df-pr 3674 df-op 3676 df-uni 3892 df-int 3927 df-iun 3970 df-br 4087 df-opab 4149 df-mpt 4150 df-tr 4186 df-id 4388 df-iord 4461 df-on 4463 df-iom 4687 df-xp 4729 df-rel 4730 df-cnv 4731 df-co 4732 df-dm 4733 df-rn 4734 df-res 4735 df-ima 4736 df-iota 5284 df-fun 5326 df-fn 5327 df-f 5328 df-f1 5329 df-fo 5330 df-f1o 5331 df-fv 5332 df-ov 6016 df-oprab 6017 df-mpo 6018 df-1st 6298 df-2nd 6299 df-recs 6466 df-frec 6552 df-neg 8346 df-inn 9137 df-z 9473 df-seqfrec 10703 df-ndx 13078 df-slot 13079 df-base 13081 df-mulg 13700 |
| This theorem is referenced by: zlmval 14634 zlmlemg 14635 zlmsca 14639 zlmvscag 14640 |
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