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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 14156. (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 14146 | . 2 ⊢ (𝑅 ∈ 𝑉 → 𝑂 = (𝑅 sSet 〈(.r‘ndx), tpos (.r‘𝑅)〉)) |
| 5 | mulrslid 13278 | . . . . 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 13172 | . . . 4 ⊢ (𝑅 ∈ 𝑉 → (.r‘𝑅) ∈ V) |
| 9 | tposexg 6467 | . . . 4 ⊢ ((.r‘𝑅) ∈ V → tpos (.r‘𝑅) ∈ V) | |
| 10 | 8, 9 | syl 14 | . . 3 ⊢ (𝑅 ∈ 𝑉 → tpos (.r‘𝑅) ∈ V) |
| 11 | setsex 13177 | . . 3 ⊢ ((𝑅 ∈ 𝑉 ∧ (.r‘ndx) ∈ ℕ ∧ tpos (.r‘𝑅) ∈ V) → (𝑅 sSet 〈(.r‘ndx), tpos (.r‘𝑅)〉) ∈ V) | |
| 12 | 7, 10, 11 | mpd3an23 1376 | . 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 1398 ∈ wcel 2202 Vcvv 2803 〈cop 3676 ‘cfv 5333 (class class class)co 6028 tpos ctpos 6453 ℕcn 9185 ndxcnx 13142 sSet csts 13143 Slot cslot 13144 Basecbs 13145 .rcmulr 13224 opprcoppr 14144 |
| 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 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 2204 ax-14 2205 ax-ext 2213 ax-sep 4212 ax-nul 4220 ax-pow 4270 ax-pr 4305 ax-un 4536 ax-setind 4641 ax-cnex 8166 ax-resscn 8167 ax-1re 8169 ax-addrcl 8172 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ne 2404 df-ral 2516 df-rex 2517 df-rab 2520 df-v 2805 df-sbc 3033 df-csb 3129 df-dif 3203 df-un 3205 df-in 3207 df-ss 3214 df-nul 3497 df-pw 3658 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-int 3934 df-br 4094 df-opab 4156 df-mpt 4157 df-id 4396 df-xp 4737 df-rel 4738 df-cnv 4739 df-co 4740 df-dm 4741 df-rn 4742 df-res 4743 df-ima 4744 df-iota 5293 df-fun 5335 df-fn 5336 df-fv 5341 df-ov 6031 df-oprab 6032 df-mpo 6033 df-tpos 6454 df-inn 9186 df-2 9244 df-3 9245 df-ndx 13148 df-slot 13149 df-sets 13152 df-mulr 13237 df-oppr 14145 |
| This theorem is referenced by: opprrngbg 14155 oppr0g 14158 oppr1g 14159 opprnegg 14160 opprsubgg 14161 crngridl 14609 |
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