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| Mirrors > Home > ILE Home > Th. List > opprex | GIF version | ||
| Description: Existence of the opposite ring. If you know that 𝑅 is a ring, see opprring 14111. (Contributed by Jim Kingdon, 10-Jan-2025.) |
| Ref | Expression |
|---|---|
| opprex.o | ⊢ 𝑂 = (oppr‘𝑅) |
| Ref | Expression |
|---|---|
| opprex | ⊢ (𝑅 ∈ 𝑉 → 𝑂 ∈ V) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2231 | . . 3 ⊢ (Base‘𝑅) = (Base‘𝑅) | |
| 2 | eqid 2231 | . . 3 ⊢ (.r‘𝑅) = (.r‘𝑅) | |
| 3 | opprex.o | . . 3 ⊢ 𝑂 = (oppr‘𝑅) | |
| 4 | 1, 2, 3 | opprvalg 14101 | . 2 ⊢ (𝑅 ∈ 𝑉 → 𝑂 = (𝑅 sSet 〈(.r‘ndx), tpos (.r‘𝑅)〉)) |
| 5 | mulrslid 13233 | . . . . 5 ⊢ (.r = Slot (.r‘ndx) ∧ (.r‘ndx) ∈ ℕ) | |
| 6 | 5 | simpri 113 | . . . 4 ⊢ (.r‘ndx) ∈ ℕ |
| 7 | 6 | a1i 9 | . . 3 ⊢ (𝑅 ∈ 𝑉 → (.r‘ndx) ∈ ℕ) |
| 8 | 5 | slotex 13127 | . . . 4 ⊢ (𝑅 ∈ 𝑉 → (.r‘𝑅) ∈ V) |
| 9 | tposexg 6424 | . . . 4 ⊢ ((.r‘𝑅) ∈ V → tpos (.r‘𝑅) ∈ V) | |
| 10 | 8, 9 | syl 14 | . . 3 ⊢ (𝑅 ∈ 𝑉 → tpos (.r‘𝑅) ∈ V) |
| 11 | setsex 13132 | . . 3 ⊢ ((𝑅 ∈ 𝑉 ∧ (.r‘ndx) ∈ ℕ ∧ tpos (.r‘𝑅) ∈ V) → (𝑅 sSet 〈(.r‘ndx), tpos (.r‘𝑅)〉) ∈ V) | |
| 12 | 7, 10, 11 | mpd3an23 1375 | . 2 ⊢ (𝑅 ∈ 𝑉 → (𝑅 sSet 〈(.r‘ndx), tpos (.r‘𝑅)〉) ∈ V) |
| 13 | 4, 12 | eqeltrd 2308 | 1 ⊢ (𝑅 ∈ 𝑉 → 𝑂 ∈ V) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1397 ∈ wcel 2202 Vcvv 2802 〈cop 3672 ‘cfv 5326 (class class class)co 6018 tpos ctpos 6410 ℕcn 9143 ndxcnx 13097 sSet csts 13098 Slot cslot 13099 Basecbs 13100 .rcmulr 13179 opprcoppr 14099 |
| 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 619 ax-in2 620 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2204 ax-14 2205 ax-ext 2213 ax-sep 4207 ax-nul 4215 ax-pow 4264 ax-pr 4299 ax-un 4530 ax-setind 4635 ax-cnex 8123 ax-resscn 8124 ax-1re 8126 ax-addrcl 8129 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-fal 1403 df-nf 1509 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ne 2403 df-ral 2515 df-rex 2516 df-rab 2519 df-v 2804 df-sbc 3032 df-csb 3128 df-dif 3202 df-un 3204 df-in 3206 df-ss 3213 df-nul 3495 df-pw 3654 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-int 3929 df-br 4089 df-opab 4151 df-mpt 4152 df-id 4390 df-xp 4731 df-rel 4732 df-cnv 4733 df-co 4734 df-dm 4735 df-rn 4736 df-res 4737 df-ima 4738 df-iota 5286 df-fun 5328 df-fn 5329 df-fv 5334 df-ov 6021 df-oprab 6022 df-mpo 6023 df-tpos 6411 df-inn 9144 df-2 9202 df-3 9203 df-ndx 13103 df-slot 13104 df-sets 13107 df-mulr 13192 df-oppr 14100 |
| This theorem is referenced by: opprrngbg 14110 oppr0g 14113 oppr1g 14114 opprnegg 14115 opprsubgg 14116 crngridl 14563 |
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