Mathbox for Jeff Madsen |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > Mathboxes > inidl | Structured version Visualization version GIF version |
Description: The intersection of two ideals is an ideal. (Contributed by Jeff Madsen, 16-Jun-2011.) |
Ref | Expression |
---|---|
inidl | ⊢ ((𝑅 ∈ RingOps ∧ 𝐼 ∈ (Idl‘𝑅) ∧ 𝐽 ∈ (Idl‘𝑅)) → (𝐼 ∩ 𝐽) ∈ (Idl‘𝑅)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | intprg 4912 | . . 3 ⊢ ((𝐼 ∈ (Idl‘𝑅) ∧ 𝐽 ∈ (Idl‘𝑅)) → ∩ {𝐼, 𝐽} = (𝐼 ∩ 𝐽)) | |
2 | 1 | 3adant1 1129 | . 2 ⊢ ((𝑅 ∈ RingOps ∧ 𝐼 ∈ (Idl‘𝑅) ∧ 𝐽 ∈ (Idl‘𝑅)) → ∩ {𝐼, 𝐽} = (𝐼 ∩ 𝐽)) |
3 | prnzg 4714 | . . . . . 6 ⊢ (𝐼 ∈ (Idl‘𝑅) → {𝐼, 𝐽} ≠ ∅) | |
4 | 3 | adantr 481 | . . . . 5 ⊢ ((𝐼 ∈ (Idl‘𝑅) ∧ 𝐽 ∈ (Idl‘𝑅)) → {𝐼, 𝐽} ≠ ∅) |
5 | prssi 4754 | . . . . 5 ⊢ ((𝐼 ∈ (Idl‘𝑅) ∧ 𝐽 ∈ (Idl‘𝑅)) → {𝐼, 𝐽} ⊆ (Idl‘𝑅)) | |
6 | 4, 5 | jca 512 | . . . 4 ⊢ ((𝐼 ∈ (Idl‘𝑅) ∧ 𝐽 ∈ (Idl‘𝑅)) → ({𝐼, 𝐽} ≠ ∅ ∧ {𝐼, 𝐽} ⊆ (Idl‘𝑅))) |
7 | intidl 36187 | . . . . 5 ⊢ ((𝑅 ∈ RingOps ∧ {𝐼, 𝐽} ≠ ∅ ∧ {𝐼, 𝐽} ⊆ (Idl‘𝑅)) → ∩ {𝐼, 𝐽} ∈ (Idl‘𝑅)) | |
8 | 7 | 3expb 1119 | . . . 4 ⊢ ((𝑅 ∈ RingOps ∧ ({𝐼, 𝐽} ≠ ∅ ∧ {𝐼, 𝐽} ⊆ (Idl‘𝑅))) → ∩ {𝐼, 𝐽} ∈ (Idl‘𝑅)) |
9 | 6, 8 | sylan2 593 | . . 3 ⊢ ((𝑅 ∈ RingOps ∧ (𝐼 ∈ (Idl‘𝑅) ∧ 𝐽 ∈ (Idl‘𝑅))) → ∩ {𝐼, 𝐽} ∈ (Idl‘𝑅)) |
10 | 9 | 3impb 1114 | . 2 ⊢ ((𝑅 ∈ RingOps ∧ 𝐼 ∈ (Idl‘𝑅) ∧ 𝐽 ∈ (Idl‘𝑅)) → ∩ {𝐼, 𝐽} ∈ (Idl‘𝑅)) |
11 | 2, 10 | eqeltrrd 2840 | 1 ⊢ ((𝑅 ∈ RingOps ∧ 𝐼 ∈ (Idl‘𝑅) ∧ 𝐽 ∈ (Idl‘𝑅)) → (𝐼 ∩ 𝐽) ∈ (Idl‘𝑅)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 396 ∧ w3a 1086 = wceq 1539 ∈ wcel 2106 ≠ wne 2943 ∩ cin 3886 ⊆ wss 3887 ∅c0 4256 {cpr 4563 ∩ cint 4879 ‘cfv 6433 RingOpscrngo 36052 Idlcidl 36165 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-ral 3069 df-rex 3070 df-rab 3073 df-v 3434 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-int 4880 df-br 5075 df-opab 5137 df-mpt 5158 df-id 5489 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-iota 6391 df-fun 6435 df-fv 6441 df-ov 7278 df-idl 36168 |
This theorem is referenced by: (None) |
Copyright terms: Public domain | W3C validator |