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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 2234 | . . 3 ⊢ (Base‘𝐺) = (Base‘𝐺) | |
| 2 | eqid 2234 | . . 3 ⊢ (+g‘𝐺) = (+g‘𝐺) | |
| 3 | eqid 2234 | . . 3 ⊢ (0g‘𝐺) = (0g‘𝐺) | |
| 4 | eqid 2234 | . . 3 ⊢ (invg‘𝐺) = (invg‘𝐺) | |
| 5 | eqid 2234 | . . 3 ⊢ (.g‘𝐺) = (.g‘𝐺) | |
| 6 | 1, 2, 3, 4, 5 | mulgfvalg 13859 | . 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 9591 | . . 3 ⊢ ℤ ∈ V | |
| 8 | basfn 13292 | . . . 4 ⊢ Base Fn V | |
| 9 | elex 2827 | . . . 4 ⊢ (𝐺 ∈ 𝑉 → 𝐺 ∈ V) | |
| 10 | funfvex 5689 | . . . . 5 ⊢ ((Fun Base ∧ 𝐺 ∈ dom Base) → (Base‘𝐺) ∈ V) | |
| 11 | 10 | funfni 5460 | . . . 4 ⊢ ((Base Fn V ∧ 𝐺 ∈ V) → (Base‘𝐺) ∈ V) |
| 12 | 8, 9, 11 | sylancr 414 | . . 3 ⊢ (𝐺 ∈ 𝑉 → (Base‘𝐺) ∈ V) |
| 13 | mpoexga 6410 | . . 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 2311 | 1 ⊢ (𝐺 ∈ 𝑉 → (.g‘𝐺) ∈ V) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1398 ∈ wcel 2205 Vcvv 2815 ifcif 3622 {csn 3691 class class class wbr 4111 × cxp 4749 Fn wfn 5349 ‘cfv 5354 ∈ cmpo 6054 0cc0 8132 1c1 8133 < clt 8313 -cneg 8450 ℕcn 9242 ℤcz 9582 seqcseq 10816 Basecbs 13233 +gcplusg 13311 0gc0g 13490 invgcminusg 13735 .gcmg 13857 |
| 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 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 2207 ax-14 2208 ax-ext 2216 ax-coll 4227 ax-sep 4230 ax-pow 4289 ax-pr 4324 ax-un 4556 ax-setind 4661 ax-iinf 4712 ax-cnex 8223 ax-resscn 8224 ax-1re 8226 ax-addrcl 8229 |
| This theorem depends on definitions: df-bi 117 df-3or 1006 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ral 2527 df-rex 2528 df-reu 2529 df-rab 2531 df-v 2817 df-sbc 3045 df-csb 3141 df-un 3217 df-in 3219 df-ss 3226 df-if 3623 df-pw 3673 df-sn 3697 df-pr 3698 df-op 3700 df-uni 3917 df-int 3952 df-iun 3995 df-br 4112 df-opab 4174 df-mpt 4175 df-tr 4211 df-id 4416 df-iord 4489 df-on 4491 df-iom 4715 df-xp 4757 df-rel 4758 df-cnv 4759 df-co 4760 df-dm 4761 df-rn 4762 df-res 4763 df-ima 4764 df-iota 5314 df-fun 5356 df-fn 5357 df-f 5358 df-f1 5359 df-fo 5360 df-f1o 5361 df-fv 5362 df-ov 6055 df-oprab 6056 df-mpo 6057 df-1st 6336 df-2nd 6337 df-recs 6538 df-frec 6624 df-neg 8452 df-inn 9243 df-z 9583 df-seqfrec 10817 df-ndx 13236 df-slot 13237 df-base 13239 df-mulg 13858 |
| This theorem is referenced by: zlmval 14824 zlmlemg 14825 zlmsca 14829 zlmvscag 14830 |
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