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| Mirrors > Home > MPE Home > Th. List > 2idllidld | Structured version Visualization version GIF version | ||
| Description: A two-sided ideal is a left ideal. (Contributed by Thierry Arnoux, 9-Mar-2025.) |
| Ref | Expression |
|---|---|
| 2idllidld.1 | ⊢ (𝜑 → 𝐼 ∈ (2Ideal‘𝑅)) |
| Ref | Expression |
|---|---|
| 2idllidld | ⊢ (𝜑 → 𝐼 ∈ (LIdeal‘𝑅)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2idllidld.1 | . . 3 ⊢ (𝜑 → 𝐼 ∈ (2Ideal‘𝑅)) | |
| 2 | eqid 2760 | . . . 4 ⊢ (LIdeal‘𝑅) = (LIdeal‘𝑅) | |
| 3 | eqid 2760 | . . . 4 ⊢ (oppr‘𝑅) = (oppr‘𝑅) | |
| 4 | eqid 2760 | . . . 4 ⊢ (LIdeal‘(oppr‘𝑅)) = (LIdeal‘(oppr‘𝑅)) | |
| 5 | eqid 2760 | . . . 4 ⊢ (2Ideal‘𝑅) = (2Ideal‘𝑅) | |
| 6 | 2, 3, 4, 5 | 2idlval 21553 | . . 3 ⊢ (2Ideal‘𝑅) = ((LIdeal‘𝑅) ∩ (LIdeal‘(oppr‘𝑅))) |
| 7 | 1, 6 | eleqtrdi 2870 | . 2 ⊢ (𝜑 → 𝐼 ∈ ((LIdeal‘𝑅) ∩ (LIdeal‘(oppr‘𝑅)))) |
| 8 | 7 | elin1d 4100 | 1 ⊢ (𝜑 → 𝐼 ∈ (LIdeal‘𝑅)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2144 ∩ cin 4088 ‘cfv 6543 opprcoppr 20575 LIdealclidl 21493 2Idealc2idl 21551 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pr 5391 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-ss 3897 df-dif 4046 df-in 4090 df-un 4150 df-nul 4278 df-if 4482 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-br 5103 df-opab 5167 df-mpt 5186 df-id 5546 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-iota 6497 df-fun 6545 df-fv 6551 df-2idl 21552 |
| This theorem is used by: 2idl1el 21558 df2idl2 21560 2idlss 21565 qusmul2idl 21583 rng2idl1cntr 21610 qsnzr 21648 rsp2idlid 33981 opprqusmulr 34065 opprqus1r 34066 opprqusdrng 34067 qsdrnglem2 34070 qsdrng 34071 isidom3 49578 |
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