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| Mirrors > Home > MPE Home > Th. List > Mathboxes > maxidlnr | Structured version Visualization version GIF version | ||
| Description: A maximal ideal is proper. (Contributed by Jeff Madsen, 16-Jun-2011.) | 
| Ref | Expression | 
|---|---|
| maxidlnr.1 | ⊢ 𝐺 = (1st ‘𝑅) | 
| maxidlnr.2 | ⊢ 𝑋 = ran 𝐺 | 
| Ref | Expression | 
|---|---|
| maxidlnr | ⊢ ((𝑅 ∈ RingOps ∧ 𝑀 ∈ (MaxIdl‘𝑅)) → 𝑀 ≠ 𝑋) | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | maxidlnr.1 | . . . 4 ⊢ 𝐺 = (1st ‘𝑅) | |
| 2 | maxidlnr.2 | . . . 4 ⊢ 𝑋 = ran 𝐺 | |
| 3 | 1, 2 | ismaxidl 38047 | . . 3 ⊢ (𝑅 ∈ RingOps → (𝑀 ∈ (MaxIdl‘𝑅) ↔ (𝑀 ∈ (Idl‘𝑅) ∧ 𝑀 ≠ 𝑋 ∧ ∀𝑗 ∈ (Idl‘𝑅)(𝑀 ⊆ 𝑗 → (𝑗 = 𝑀 ∨ 𝑗 = 𝑋))))) | 
| 4 | 3 | biimpa 476 | . 2 ⊢ ((𝑅 ∈ RingOps ∧ 𝑀 ∈ (MaxIdl‘𝑅)) → (𝑀 ∈ (Idl‘𝑅) ∧ 𝑀 ≠ 𝑋 ∧ ∀𝑗 ∈ (Idl‘𝑅)(𝑀 ⊆ 𝑗 → (𝑗 = 𝑀 ∨ 𝑗 = 𝑋)))) | 
| 5 | 4 | simp2d 1144 | 1 ⊢ ((𝑅 ∈ RingOps ∧ 𝑀 ∈ (MaxIdl‘𝑅)) → 𝑀 ≠ 𝑋) | 
| Colors of variables: wff setvar class | 
| Syntax hints: → wi 4 ∧ wa 395 ∨ wo 848 ∧ w3a 1087 = wceq 1540 ∈ wcel 2108 ≠ wne 2940 ∀wral 3061 ⊆ wss 3951 ran crn 5686 ‘cfv 6561 1st c1st 8012 RingOpscrngo 37901 Idlcidl 38014 MaxIdlcmaxidl 38016 | 
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2157 ax-12 2177 ax-ext 2708 ax-sep 5296 ax-nul 5306 ax-pr 5432 | 
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2065 df-mo 2540 df-eu 2569 df-clab 2715 df-cleq 2729 df-clel 2816 df-nfc 2892 df-ne 2941 df-ral 3062 df-rex 3071 df-rab 3437 df-v 3482 df-dif 3954 df-un 3956 df-in 3958 df-ss 3968 df-nul 4334 df-if 4526 df-pw 4602 df-sn 4627 df-pr 4629 df-op 4633 df-uni 4908 df-br 5144 df-opab 5206 df-mpt 5226 df-id 5578 df-xp 5691 df-rel 5692 df-cnv 5693 df-co 5694 df-dm 5695 df-rn 5696 df-iota 6514 df-fun 6563 df-fv 6569 df-maxidl 38019 | 
| This theorem is referenced by: maxidln1 38051 | 
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