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| Mirrors > Home > ILE Home > Th. List > mgpex | GIF version | ||
| Description: Existence of the multiplication group. If 𝑅 is known to be a semiring, see srgmgp 14379. (Contributed by Jim Kingdon, 10-Jan-2025.) |
| Ref | Expression |
|---|---|
| mgpbas.1 | ⊢ 𝑀 = (mulGrp‘𝑅) |
| Ref | Expression |
|---|---|
| mgpex | ⊢ (𝑅 ∈ 𝑉 → 𝑀 ∈ V) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | mgpbas.1 | . . 3 ⊢ 𝑀 = (mulGrp‘𝑅) | |
| 2 | eqid 2238 | . . 3 ⊢ (.r‘𝑅) = (.r‘𝑅) | |
| 3 | 1, 2 | mgpvalg 14327 | . 2 ⊢ (𝑅 ∈ 𝑉 → 𝑀 = (𝑅 sSet 〈(+g‘ndx), (.r‘𝑅)〉)) |
| 4 | plusgslid 13525 | . . . . 5 ⊢ (+g = Slot (+g‘ndx) ∧ (+g‘ndx) ∈ ℕ) | |
| 5 | 4 | simpri 113 | . . . 4 ⊢ (+g‘ndx) ∈ ℕ |
| 6 | 5 | a1i 9 | . . 3 ⊢ (𝑅 ∈ 𝑉 → (+g‘ndx) ∈ ℕ) |
| 7 | mulrslid 13545 | . . . 4 ⊢ (.r = Slot (.r‘ndx) ∧ (.r‘ndx) ∈ ℕ) | |
| 8 | 7 | slotex 13437 | . . 3 ⊢ (𝑅 ∈ 𝑉 → (.r‘𝑅) ∈ V) |
| 9 | setsex 13442 | . . 3 ⊢ ((𝑅 ∈ 𝑉 ∧ (+g‘ndx) ∈ ℕ ∧ (.r‘𝑅) ∈ V) → (𝑅 sSet 〈(+g‘ndx), (.r‘𝑅)〉) ∈ V) | |
| 10 | 6, 8, 9 | mpd3an23 1380 | . 2 ⊢ (𝑅 ∈ 𝑉 → (𝑅 sSet 〈(+g‘ndx), (.r‘𝑅)〉) ∈ V) |
| 11 | 3, 10 | eqeltrd 2315 | 1 ⊢ (𝑅 ∈ 𝑉 → 𝑀 ∈ V) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 = wceq 1402 ∈ wcel 2209 Vcvv 2821 〈cop 3712 ‘cfv 5380 (class class class)co 6088 ℕcn 9313 ndxcnx 13407 sSet csts 13408 Slot cslot 13409 +gcplusg 13490 .rcmulr 13491 mulGrpcmgp 14324 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4251 ax-pow 4313 ax-pr 4348 ax-un 4580 ax-setind 4686 ax-cnex 8276 ax-resscn 8277 ax-1re 8279 ax-addrcl 8282 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-ral 2533 df-rex 2534 df-rab 2537 df-v 2823 df-sbc 3052 df-csb 3148 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-int 3971 df-br 4132 df-opab 4194 df-mpt 4195 df-id 4440 df-xp 4782 df-rel 4783 df-cnv 4784 df-co 4785 df-dm 4786 df-rn 4787 df-res 4788 df-iota 5340 df-fun 5382 df-fn 5383 df-fv 5388 df-ov 6091 df-oprab 6092 df-mpo 6093 df-inn 9314 df-2 9372 df-3 9373 df-ndx 13413 df-slot 13414 df-sets 13417 df-plusg 13503 df-mulr 13504 df-mgp 14325 |
| This theorem is used by: mgpress 14337 isrngd 14359 rngpropd 14361 ringidss 14441 oppr1g 14497 unitgrpbasd 14531 unitgrp 14532 unitlinv 14542 unitrinv 14543 rngidpropdg 14562 rhmunitinv 14594 rnglidlmmgm 14942 expghmap 15051 |
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