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Theorem unichnidl 35926
Description: The union of a nonempty chain of ideals is an ideal. (Contributed by Jeff Madsen, 5-Jan-2011.)
Assertion
Ref Expression
unichnidl ((𝑅 ∈ RingOps ∧ (𝐶 ≠ ∅ ∧ 𝐶 ⊆ (Idl‘𝑅) ∧ ∀𝑖𝐶𝑗𝐶 (𝑖𝑗𝑗𝑖))) → 𝐶 ∈ (Idl‘𝑅))
Distinct variable groups:   𝑅,𝑖   𝐶,𝑖,𝑗
Allowed substitution hint:   𝑅(𝑗)

Proof of Theorem unichnidl
Dummy variables 𝑘 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 dfss3 3888 . . . . 5 (𝐶 ⊆ (Idl‘𝑅) ↔ ∀𝑖𝐶 𝑖 ∈ (Idl‘𝑅))
2 eqid 2737 . . . . . . . . 9 (1st𝑅) = (1st𝑅)
3 eqid 2737 . . . . . . . . 9 ran (1st𝑅) = ran (1st𝑅)
42, 3idlss 35911 . . . . . . . 8 ((𝑅 ∈ RingOps ∧ 𝑖 ∈ (Idl‘𝑅)) → 𝑖 ⊆ ran (1st𝑅))
54ex 416 . . . . . . 7 (𝑅 ∈ RingOps → (𝑖 ∈ (Idl‘𝑅) → 𝑖 ⊆ ran (1st𝑅)))
65ralimdv 3101 . . . . . 6 (𝑅 ∈ RingOps → (∀𝑖𝐶 𝑖 ∈ (Idl‘𝑅) → ∀𝑖𝐶 𝑖 ⊆ ran (1st𝑅)))
76imp 410 . . . . 5 ((𝑅 ∈ RingOps ∧ ∀𝑖𝐶 𝑖 ∈ (Idl‘𝑅)) → ∀𝑖𝐶 𝑖 ⊆ ran (1st𝑅))
81, 7sylan2b 597 . . . 4 ((𝑅 ∈ RingOps ∧ 𝐶 ⊆ (Idl‘𝑅)) → ∀𝑖𝐶 𝑖 ⊆ ran (1st𝑅))
9 unissb 4853 . . . 4 ( 𝐶 ⊆ ran (1st𝑅) ↔ ∀𝑖𝐶 𝑖 ⊆ ran (1st𝑅))
108, 9sylibr 237 . . 3 ((𝑅 ∈ RingOps ∧ 𝐶 ⊆ (Idl‘𝑅)) → 𝐶 ⊆ ran (1st𝑅))
11103ad2antr2 1191 . 2 ((𝑅 ∈ RingOps ∧ (𝐶 ≠ ∅ ∧ 𝐶 ⊆ (Idl‘𝑅) ∧ ∀𝑖𝐶𝑗𝐶 (𝑖𝑗𝑗𝑖))) → 𝐶 ⊆ ran (1st𝑅))
12 eqid 2737 . . . . . . . . . . 11 (GId‘(1st𝑅)) = (GId‘(1st𝑅))
132, 12idl0cl 35913 . . . . . . . . . 10 ((𝑅 ∈ RingOps ∧ 𝑖 ∈ (Idl‘𝑅)) → (GId‘(1st𝑅)) ∈ 𝑖)
1413ex 416 . . . . . . . . 9 (𝑅 ∈ RingOps → (𝑖 ∈ (Idl‘𝑅) → (GId‘(1st𝑅)) ∈ 𝑖))
1514ralimdv 3101 . . . . . . . 8 (𝑅 ∈ RingOps → (∀𝑖𝐶 𝑖 ∈ (Idl‘𝑅) → ∀𝑖𝐶 (GId‘(1st𝑅)) ∈ 𝑖))
1615imp 410 . . . . . . 7 ((𝑅 ∈ RingOps ∧ ∀𝑖𝐶 𝑖 ∈ (Idl‘𝑅)) → ∀𝑖𝐶 (GId‘(1st𝑅)) ∈ 𝑖)
171, 16sylan2b 597 . . . . . 6 ((𝑅 ∈ RingOps ∧ 𝐶 ⊆ (Idl‘𝑅)) → ∀𝑖𝐶 (GId‘(1st𝑅)) ∈ 𝑖)
18 r19.2z 4406 . . . . . 6 ((𝐶 ≠ ∅ ∧ ∀𝑖𝐶 (GId‘(1st𝑅)) ∈ 𝑖) → ∃𝑖𝐶 (GId‘(1st𝑅)) ∈ 𝑖)
1917, 18sylan2 596 . . . . 5 ((𝐶 ≠ ∅ ∧ (𝑅 ∈ RingOps ∧ 𝐶 ⊆ (Idl‘𝑅))) → ∃𝑖𝐶 (GId‘(1st𝑅)) ∈ 𝑖)
2019an12s 649 . . . 4 ((𝑅 ∈ RingOps ∧ (𝐶 ≠ ∅ ∧ 𝐶 ⊆ (Idl‘𝑅))) → ∃𝑖𝐶 (GId‘(1st𝑅)) ∈ 𝑖)
21 eluni2 4823 . . . 4 ((GId‘(1st𝑅)) ∈ 𝐶 ↔ ∃𝑖𝐶 (GId‘(1st𝑅)) ∈ 𝑖)
2220, 21sylibr 237 . . 3 ((𝑅 ∈ RingOps ∧ (𝐶 ≠ ∅ ∧ 𝐶 ⊆ (Idl‘𝑅))) → (GId‘(1st𝑅)) ∈ 𝐶)
23223adantr3 1173 . 2 ((𝑅 ∈ RingOps ∧ (𝐶 ≠ ∅ ∧ 𝐶 ⊆ (Idl‘𝑅) ∧ ∀𝑖𝐶𝑗𝐶 (𝑖𝑗𝑗𝑖))) → (GId‘(1st𝑅)) ∈ 𝐶)
24 eluni2 4823 . . . 4 (𝑥 𝐶 ↔ ∃𝑘𝐶 𝑥𝑘)
25 sseq1 3926 . . . . . . . . . . . . . . . 16 (𝑖 = 𝑘 → (𝑖𝑗𝑘𝑗))
26 sseq2 3927 . . . . . . . . . . . . . . . 16 (𝑖 = 𝑘 → (𝑗𝑖𝑗𝑘))
2725, 26orbi12d 919 . . . . . . . . . . . . . . 15 (𝑖 = 𝑘 → ((𝑖𝑗𝑗𝑖) ↔ (𝑘𝑗𝑗𝑘)))
2827ralbidv 3118 . . . . . . . . . . . . . 14 (𝑖 = 𝑘 → (∀𝑗𝐶 (𝑖𝑗𝑗𝑖) ↔ ∀𝑗𝐶 (𝑘𝑗𝑗𝑘)))
2928rspcv 3532 . . . . . . . . . . . . 13 (𝑘𝐶 → (∀𝑖𝐶𝑗𝐶 (𝑖𝑗𝑗𝑖) → ∀𝑗𝐶 (𝑘𝑗𝑗𝑘)))
3029adantr 484 . . . . . . . . . . . 12 ((𝑘𝐶𝑥𝑘) → (∀𝑖𝐶𝑗𝐶 (𝑖𝑗𝑗𝑖) → ∀𝑗𝐶 (𝑘𝑗𝑗𝑘)))
3130ad2antlr 727 . . . . . . . . . . 11 (((𝑅 ∈ RingOps ∧ (𝑘𝐶𝑥𝑘)) ∧ 𝐶 ⊆ (Idl‘𝑅)) → (∀𝑖𝐶𝑗𝐶 (𝑖𝑗𝑗𝑖) → ∀𝑗𝐶 (𝑘𝑗𝑗𝑘)))
3231imp 410 . . . . . . . . . 10 ((((𝑅 ∈ RingOps ∧ (𝑘𝐶𝑥𝑘)) ∧ 𝐶 ⊆ (Idl‘𝑅)) ∧ ∀𝑖𝐶𝑗𝐶 (𝑖𝑗𝑗𝑖)) → ∀𝑗𝐶 (𝑘𝑗𝑗𝑘))
33 eluni2 4823 . . . . . . . . . . . 12 (𝑦 𝐶 ↔ ∃𝑖𝐶 𝑦𝑖)
34 sseq2 3927 . . . . . . . . . . . . . . . . . . 19 (𝑗 = 𝑖 → (𝑘𝑗𝑘𝑖))
35 sseq1 3926 . . . . . . . . . . . . . . . . . . 19 (𝑗 = 𝑖 → (𝑗𝑘𝑖𝑘))
3634, 35orbi12d 919 . . . . . . . . . . . . . . . . . 18 (𝑗 = 𝑖 → ((𝑘𝑗𝑗𝑘) ↔ (𝑘𝑖𝑖𝑘)))
3736rspcv 3532 . . . . . . . . . . . . . . . . 17 (𝑖𝐶 → (∀𝑗𝐶 (𝑘𝑗𝑗𝑘) → (𝑘𝑖𝑖𝑘)))
3837ad2antrl 728 . . . . . . . . . . . . . . . 16 ((((𝑅 ∈ RingOps ∧ (𝑘𝐶𝑥𝑘)) ∧ 𝐶 ⊆ (Idl‘𝑅)) ∧ (𝑖𝐶𝑦𝑖)) → (∀𝑗𝐶 (𝑘𝑗𝑗𝑘) → (𝑘𝑖𝑖𝑘)))
3938imp 410 . . . . . . . . . . . . . . 15 (((((𝑅 ∈ RingOps ∧ (𝑘𝐶𝑥𝑘)) ∧ 𝐶 ⊆ (Idl‘𝑅)) ∧ (𝑖𝐶𝑦𝑖)) ∧ ∀𝑗𝐶 (𝑘𝑗𝑗𝑘)) → (𝑘𝑖𝑖𝑘))
40 ssel2 3895 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝑘𝑖𝑥𝑘) → 𝑥𝑖)
4140ancoms 462 . . . . . . . . . . . . . . . . . . . . . 22 ((𝑥𝑘𝑘𝑖) → 𝑥𝑖)
4241adantll 714 . . . . . . . . . . . . . . . . . . . . 21 (((𝑘𝐶𝑥𝑘) ∧ 𝑘𝑖) → 𝑥𝑖)
43 ssel2 3895 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((𝐶 ⊆ (Idl‘𝑅) ∧ 𝑖𝐶) → 𝑖 ∈ (Idl‘𝑅))
442idladdcl 35914 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (((𝑅 ∈ RingOps ∧ 𝑖 ∈ (Idl‘𝑅)) ∧ (𝑥𝑖𝑦𝑖)) → (𝑥(1st𝑅)𝑦) ∈ 𝑖)
4544ancom2s 650 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 (((𝑅 ∈ RingOps ∧ 𝑖 ∈ (Idl‘𝑅)) ∧ (𝑦𝑖𝑥𝑖)) → (𝑥(1st𝑅)𝑦) ∈ 𝑖)
4645expr 460 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (((𝑅 ∈ RingOps ∧ 𝑖 ∈ (Idl‘𝑅)) ∧ 𝑦𝑖) → (𝑥𝑖 → (𝑥(1st𝑅)𝑦) ∈ 𝑖))
4746an32s 652 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (((𝑅 ∈ RingOps ∧ 𝑦𝑖) ∧ 𝑖 ∈ (Idl‘𝑅)) → (𝑥𝑖 → (𝑥(1st𝑅)𝑦) ∈ 𝑖))
4843, 47sylan2 596 . . . . . . . . . . . . . . . . . . . . . . . . 25 (((𝑅 ∈ RingOps ∧ 𝑦𝑖) ∧ (𝐶 ⊆ (Idl‘𝑅) ∧ 𝑖𝐶)) → (𝑥𝑖 → (𝑥(1st𝑅)𝑦) ∈ 𝑖))
4948an42s 661 . . . . . . . . . . . . . . . . . . . . . . . 24 (((𝑅 ∈ RingOps ∧ 𝐶 ⊆ (Idl‘𝑅)) ∧ (𝑖𝐶𝑦𝑖)) → (𝑥𝑖 → (𝑥(1st𝑅)𝑦) ∈ 𝑖))
5049anasss 470 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝑅 ∈ RingOps ∧ (𝐶 ⊆ (Idl‘𝑅) ∧ (𝑖𝐶𝑦𝑖))) → (𝑥𝑖 → (𝑥(1st𝑅)𝑦) ∈ 𝑖))
5150imp 410 . . . . . . . . . . . . . . . . . . . . . 22 (((𝑅 ∈ RingOps ∧ (𝐶 ⊆ (Idl‘𝑅) ∧ (𝑖𝐶𝑦𝑖))) ∧ 𝑥𝑖) → (𝑥(1st𝑅)𝑦) ∈ 𝑖)
52 simprl 771 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝐶 ⊆ (Idl‘𝑅) ∧ (𝑖𝐶𝑦𝑖)) → 𝑖𝐶)
5352ad2antlr 727 . . . . . . . . . . . . . . . . . . . . . 22 (((𝑅 ∈ RingOps ∧ (𝐶 ⊆ (Idl‘𝑅) ∧ (𝑖𝐶𝑦𝑖))) ∧ 𝑥𝑖) → 𝑖𝐶)
54 elunii 4824 . . . . . . . . . . . . . . . . . . . . . 22 (((𝑥(1st𝑅)𝑦) ∈ 𝑖𝑖𝐶) → (𝑥(1st𝑅)𝑦) ∈ 𝐶)
5551, 53, 54syl2anc 587 . . . . . . . . . . . . . . . . . . . . 21 (((𝑅 ∈ RingOps ∧ (𝐶 ⊆ (Idl‘𝑅) ∧ (𝑖𝐶𝑦𝑖))) ∧ 𝑥𝑖) → (𝑥(1st𝑅)𝑦) ∈ 𝐶)
5642, 55sylan2 596 . . . . . . . . . . . . . . . . . . . 20 (((𝑅 ∈ RingOps ∧ (𝐶 ⊆ (Idl‘𝑅) ∧ (𝑖𝐶𝑦𝑖))) ∧ ((𝑘𝐶𝑥𝑘) ∧ 𝑘𝑖)) → (𝑥(1st𝑅)𝑦) ∈ 𝐶)
5756expr 460 . . . . . . . . . . . . . . . . . . 19 (((𝑅 ∈ RingOps ∧ (𝐶 ⊆ (Idl‘𝑅) ∧ (𝑖𝐶𝑦𝑖))) ∧ (𝑘𝐶𝑥𝑘)) → (𝑘𝑖 → (𝑥(1st𝑅)𝑦) ∈ 𝐶))
5857an32s 652 . . . . . . . . . . . . . . . . . 18 (((𝑅 ∈ RingOps ∧ (𝑘𝐶𝑥𝑘)) ∧ (𝐶 ⊆ (Idl‘𝑅) ∧ (𝑖𝐶𝑦𝑖))) → (𝑘𝑖 → (𝑥(1st𝑅)𝑦) ∈ 𝐶))
5958anassrs 471 . . . . . . . . . . . . . . . . 17 ((((𝑅 ∈ RingOps ∧ (𝑘𝐶𝑥𝑘)) ∧ 𝐶 ⊆ (Idl‘𝑅)) ∧ (𝑖𝐶𝑦𝑖)) → (𝑘𝑖 → (𝑥(1st𝑅)𝑦) ∈ 𝐶))
6059imp 410 . . . . . . . . . . . . . . . 16 (((((𝑅 ∈ RingOps ∧ (𝑘𝐶𝑥𝑘)) ∧ 𝐶 ⊆ (Idl‘𝑅)) ∧ (𝑖𝐶𝑦𝑖)) ∧ 𝑘𝑖) → (𝑥(1st𝑅)𝑦) ∈ 𝐶)
61 ssel2 3895 . . . . . . . . . . . . . . . . . . . 20 ((𝑖𝑘𝑦𝑖) → 𝑦𝑘)
6261ancoms 462 . . . . . . . . . . . . . . . . . . 19 ((𝑦𝑖𝑖𝑘) → 𝑦𝑘)
6362adantll 714 . . . . . . . . . . . . . . . . . 18 (((𝑖𝐶𝑦𝑖) ∧ 𝑖𝑘) → 𝑦𝑘)
64 ssel2 3895 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝐶 ⊆ (Idl‘𝑅) ∧ 𝑘𝐶) → 𝑘 ∈ (Idl‘𝑅))
652idladdcl 35914 . . . . . . . . . . . . . . . . . . . . . . . . 25 (((𝑅 ∈ RingOps ∧ 𝑘 ∈ (Idl‘𝑅)) ∧ (𝑥𝑘𝑦𝑘)) → (𝑥(1st𝑅)𝑦) ∈ 𝑘)
6665expr 460 . . . . . . . . . . . . . . . . . . . . . . . 24 (((𝑅 ∈ RingOps ∧ 𝑘 ∈ (Idl‘𝑅)) ∧ 𝑥𝑘) → (𝑦𝑘 → (𝑥(1st𝑅)𝑦) ∈ 𝑘))
6766an32s 652 . . . . . . . . . . . . . . . . . . . . . . 23 (((𝑅 ∈ RingOps ∧ 𝑥𝑘) ∧ 𝑘 ∈ (Idl‘𝑅)) → (𝑦𝑘 → (𝑥(1st𝑅)𝑦) ∈ 𝑘))
6864, 67sylan2 596 . . . . . . . . . . . . . . . . . . . . . 22 (((𝑅 ∈ RingOps ∧ 𝑥𝑘) ∧ (𝐶 ⊆ (Idl‘𝑅) ∧ 𝑘𝐶)) → (𝑦𝑘 → (𝑥(1st𝑅)𝑦) ∈ 𝑘))
6968an42s 661 . . . . . . . . . . . . . . . . . . . . 21 (((𝑅 ∈ RingOps ∧ 𝐶 ⊆ (Idl‘𝑅)) ∧ (𝑘𝐶𝑥𝑘)) → (𝑦𝑘 → (𝑥(1st𝑅)𝑦) ∈ 𝑘))
7069an32s 652 . . . . . . . . . . . . . . . . . . . 20 (((𝑅 ∈ RingOps ∧ (𝑘𝐶𝑥𝑘)) ∧ 𝐶 ⊆ (Idl‘𝑅)) → (𝑦𝑘 → (𝑥(1st𝑅)𝑦) ∈ 𝑘))
7170imp 410 . . . . . . . . . . . . . . . . . . 19 ((((𝑅 ∈ RingOps ∧ (𝑘𝐶𝑥𝑘)) ∧ 𝐶 ⊆ (Idl‘𝑅)) ∧ 𝑦𝑘) → (𝑥(1st𝑅)𝑦) ∈ 𝑘)
72 simprl 771 . . . . . . . . . . . . . . . . . . . 20 ((𝑅 ∈ RingOps ∧ (𝑘𝐶𝑥𝑘)) → 𝑘𝐶)
7372ad2antrr 726 . . . . . . . . . . . . . . . . . . 19 ((((𝑅 ∈ RingOps ∧ (𝑘𝐶𝑥𝑘)) ∧ 𝐶 ⊆ (Idl‘𝑅)) ∧ 𝑦𝑘) → 𝑘𝐶)
74 elunii 4824 . . . . . . . . . . . . . . . . . . 19 (((𝑥(1st𝑅)𝑦) ∈ 𝑘𝑘𝐶) → (𝑥(1st𝑅)𝑦) ∈ 𝐶)
7571, 73, 74syl2anc 587 . . . . . . . . . . . . . . . . . 18 ((((𝑅 ∈ RingOps ∧ (𝑘𝐶𝑥𝑘)) ∧ 𝐶 ⊆ (Idl‘𝑅)) ∧ 𝑦𝑘) → (𝑥(1st𝑅)𝑦) ∈ 𝐶)
7663, 75sylan2 596 . . . . . . . . . . . . . . . . 17 ((((𝑅 ∈ RingOps ∧ (𝑘𝐶𝑥𝑘)) ∧ 𝐶 ⊆ (Idl‘𝑅)) ∧ ((𝑖𝐶𝑦𝑖) ∧ 𝑖𝑘)) → (𝑥(1st𝑅)𝑦) ∈ 𝐶)
7776anassrs 471 . . . . . . . . . . . . . . . 16 (((((𝑅 ∈ RingOps ∧ (𝑘𝐶𝑥𝑘)) ∧ 𝐶 ⊆ (Idl‘𝑅)) ∧ (𝑖𝐶𝑦𝑖)) ∧ 𝑖𝑘) → (𝑥(1st𝑅)𝑦) ∈ 𝐶)
7860, 77jaodan 958 . . . . . . . . . . . . . . 15 (((((𝑅 ∈ RingOps ∧ (𝑘𝐶𝑥𝑘)) ∧ 𝐶 ⊆ (Idl‘𝑅)) ∧ (𝑖𝐶𝑦𝑖)) ∧ (𝑘𝑖𝑖𝑘)) → (𝑥(1st𝑅)𝑦) ∈ 𝐶)
7939, 78syldan 594 . . . . . . . . . . . . . 14 (((((𝑅 ∈ RingOps ∧ (𝑘𝐶𝑥𝑘)) ∧ 𝐶 ⊆ (Idl‘𝑅)) ∧ (𝑖𝐶𝑦𝑖)) ∧ ∀𝑗𝐶 (𝑘𝑗𝑗𝑘)) → (𝑥(1st𝑅)𝑦) ∈ 𝐶)
8079an32s 652 . . . . . . . . . . . . 13 (((((𝑅 ∈ RingOps ∧ (𝑘𝐶𝑥𝑘)) ∧ 𝐶 ⊆ (Idl‘𝑅)) ∧ ∀𝑗𝐶 (𝑘𝑗𝑗𝑘)) ∧ (𝑖𝐶𝑦𝑖)) → (𝑥(1st𝑅)𝑦) ∈ 𝐶)
8180rexlimdvaa 3204 . . . . . . . . . . . 12 ((((𝑅 ∈ RingOps ∧ (𝑘𝐶𝑥𝑘)) ∧ 𝐶 ⊆ (Idl‘𝑅)) ∧ ∀𝑗𝐶 (𝑘𝑗𝑗𝑘)) → (∃𝑖𝐶 𝑦𝑖 → (𝑥(1st𝑅)𝑦) ∈ 𝐶))
8233, 81syl5bi 245 . . . . . . . . . . 11 ((((𝑅 ∈ RingOps ∧ (𝑘𝐶𝑥𝑘)) ∧ 𝐶 ⊆ (Idl‘𝑅)) ∧ ∀𝑗𝐶 (𝑘𝑗𝑗𝑘)) → (𝑦 𝐶 → (𝑥(1st𝑅)𝑦) ∈ 𝐶))
8382ralrimiv 3104 . . . . . . . . . 10 ((((𝑅 ∈ RingOps ∧ (𝑘𝐶𝑥𝑘)) ∧ 𝐶 ⊆ (Idl‘𝑅)) ∧ ∀𝑗𝐶 (𝑘𝑗𝑗𝑘)) → ∀𝑦 𝐶(𝑥(1st𝑅)𝑦) ∈ 𝐶)
8432, 83syldan 594 . . . . . . . . 9 ((((𝑅 ∈ RingOps ∧ (𝑘𝐶𝑥𝑘)) ∧ 𝐶 ⊆ (Idl‘𝑅)) ∧ ∀𝑖𝐶𝑗𝐶 (𝑖𝑗𝑗𝑖)) → ∀𝑦 𝐶(𝑥(1st𝑅)𝑦) ∈ 𝐶)
8584anasss 470 . . . . . . . 8 (((𝑅 ∈ RingOps ∧ (𝑘𝐶𝑥𝑘)) ∧ (𝐶 ⊆ (Idl‘𝑅) ∧ ∀𝑖𝐶𝑗𝐶 (𝑖𝑗𝑗𝑖))) → ∀𝑦 𝐶(𝑥(1st𝑅)𝑦) ∈ 𝐶)
86853adantr1 1171 . . . . . . 7 (((𝑅 ∈ RingOps ∧ (𝑘𝐶𝑥𝑘)) ∧ (𝐶 ≠ ∅ ∧ 𝐶 ⊆ (Idl‘𝑅) ∧ ∀𝑖𝐶𝑗𝐶 (𝑖𝑗𝑗𝑖))) → ∀𝑦 𝐶(𝑥(1st𝑅)𝑦) ∈ 𝐶)
8786an32s 652 . . . . . 6 (((𝑅 ∈ RingOps ∧ (𝐶 ≠ ∅ ∧ 𝐶 ⊆ (Idl‘𝑅) ∧ ∀𝑖𝐶𝑗𝐶 (𝑖𝑗𝑗𝑖))) ∧ (𝑘𝐶𝑥𝑘)) → ∀𝑦 𝐶(𝑥(1st𝑅)𝑦) ∈ 𝐶)
88 eqid 2737 . . . . . . . . . . . . . . . . . 18 (2nd𝑅) = (2nd𝑅)
892, 88, 3idllmulcl 35915 . . . . . . . . . . . . . . . . 17 (((𝑅 ∈ RingOps ∧ 𝑘 ∈ (Idl‘𝑅)) ∧ (𝑥𝑘𝑧 ∈ ran (1st𝑅))) → (𝑧(2nd𝑅)𝑥) ∈ 𝑘)
9089exp43 440 . . . . . . . . . . . . . . . 16 (𝑅 ∈ RingOps → (𝑘 ∈ (Idl‘𝑅) → (𝑥𝑘 → (𝑧 ∈ ran (1st𝑅) → (𝑧(2nd𝑅)𝑥) ∈ 𝑘))))
9190com23 86 . . . . . . . . . . . . . . 15 (𝑅 ∈ RingOps → (𝑥𝑘 → (𝑘 ∈ (Idl‘𝑅) → (𝑧 ∈ ran (1st𝑅) → (𝑧(2nd𝑅)𝑥) ∈ 𝑘))))
9291imp41 429 . . . . . . . . . . . . . 14 ((((𝑅 ∈ RingOps ∧ 𝑥𝑘) ∧ 𝑘 ∈ (Idl‘𝑅)) ∧ 𝑧 ∈ ran (1st𝑅)) → (𝑧(2nd𝑅)𝑥) ∈ 𝑘)
9364, 92sylanl2 681 . . . . . . . . . . . . 13 ((((𝑅 ∈ RingOps ∧ 𝑥𝑘) ∧ (𝐶 ⊆ (Idl‘𝑅) ∧ 𝑘𝐶)) ∧ 𝑧 ∈ ran (1st𝑅)) → (𝑧(2nd𝑅)𝑥) ∈ 𝑘)
94 simplrr 778 . . . . . . . . . . . . 13 ((((𝑅 ∈ RingOps ∧ 𝑥𝑘) ∧ (𝐶 ⊆ (Idl‘𝑅) ∧ 𝑘𝐶)) ∧ 𝑧 ∈ ran (1st𝑅)) → 𝑘𝐶)
95 elunii 4824 . . . . . . . . . . . . 13 (((𝑧(2nd𝑅)𝑥) ∈ 𝑘𝑘𝐶) → (𝑧(2nd𝑅)𝑥) ∈ 𝐶)
9693, 94, 95syl2anc 587 . . . . . . . . . . . 12 ((((𝑅 ∈ RingOps ∧ 𝑥𝑘) ∧ (𝐶 ⊆ (Idl‘𝑅) ∧ 𝑘𝐶)) ∧ 𝑧 ∈ ran (1st𝑅)) → (𝑧(2nd𝑅)𝑥) ∈ 𝐶)
972, 88, 3idlrmulcl 35916 . . . . . . . . . . . . . . . . 17 (((𝑅 ∈ RingOps ∧ 𝑘 ∈ (Idl‘𝑅)) ∧ (𝑥𝑘𝑧 ∈ ran (1st𝑅))) → (𝑥(2nd𝑅)𝑧) ∈ 𝑘)
9897exp43 440 . . . . . . . . . . . . . . . 16 (𝑅 ∈ RingOps → (𝑘 ∈ (Idl‘𝑅) → (𝑥𝑘 → (𝑧 ∈ ran (1st𝑅) → (𝑥(2nd𝑅)𝑧) ∈ 𝑘))))
9998com23 86 . . . . . . . . . . . . . . 15 (𝑅 ∈ RingOps → (𝑥𝑘 → (𝑘 ∈ (Idl‘𝑅) → (𝑧 ∈ ran (1st𝑅) → (𝑥(2nd𝑅)𝑧) ∈ 𝑘))))
10099imp41 429 . . . . . . . . . . . . . 14 ((((𝑅 ∈ RingOps ∧ 𝑥𝑘) ∧ 𝑘 ∈ (Idl‘𝑅)) ∧ 𝑧 ∈ ran (1st𝑅)) → (𝑥(2nd𝑅)𝑧) ∈ 𝑘)
10164, 100sylanl2 681 . . . . . . . . . . . . 13 ((((𝑅 ∈ RingOps ∧ 𝑥𝑘) ∧ (𝐶 ⊆ (Idl‘𝑅) ∧ 𝑘𝐶)) ∧ 𝑧 ∈ ran (1st𝑅)) → (𝑥(2nd𝑅)𝑧) ∈ 𝑘)
102 elunii 4824 . . . . . . . . . . . . 13 (((𝑥(2nd𝑅)𝑧) ∈ 𝑘𝑘𝐶) → (𝑥(2nd𝑅)𝑧) ∈ 𝐶)
103101, 94, 102syl2anc 587 . . . . . . . . . . . 12 ((((𝑅 ∈ RingOps ∧ 𝑥𝑘) ∧ (𝐶 ⊆ (Idl‘𝑅) ∧ 𝑘𝐶)) ∧ 𝑧 ∈ ran (1st𝑅)) → (𝑥(2nd𝑅)𝑧) ∈ 𝐶)
10496, 103jca 515 . . . . . . . . . . 11 ((((𝑅 ∈ RingOps ∧ 𝑥𝑘) ∧ (𝐶 ⊆ (Idl‘𝑅) ∧ 𝑘𝐶)) ∧ 𝑧 ∈ ran (1st𝑅)) → ((𝑧(2nd𝑅)𝑥) ∈ 𝐶 ∧ (𝑥(2nd𝑅)𝑧) ∈ 𝐶))
105104ralrimiva 3105 . . . . . . . . . 10 (((𝑅 ∈ RingOps ∧ 𝑥𝑘) ∧ (𝐶 ⊆ (Idl‘𝑅) ∧ 𝑘𝐶)) → ∀𝑧 ∈ ran (1st𝑅)((𝑧(2nd𝑅)𝑥) ∈ 𝐶 ∧ (𝑥(2nd𝑅)𝑧) ∈ 𝐶))
106105an42s 661 . . . . . . . . 9 (((𝑅 ∈ RingOps ∧ 𝐶 ⊆ (Idl‘𝑅)) ∧ (𝑘𝐶𝑥𝑘)) → ∀𝑧 ∈ ran (1st𝑅)((𝑧(2nd𝑅)𝑥) ∈ 𝐶 ∧ (𝑥(2nd𝑅)𝑧) ∈ 𝐶))
107106an32s 652 . . . . . . . 8 (((𝑅 ∈ RingOps ∧ (𝑘𝐶𝑥𝑘)) ∧ 𝐶 ⊆ (Idl‘𝑅)) → ∀𝑧 ∈ ran (1st𝑅)((𝑧(2nd𝑅)𝑥) ∈ 𝐶 ∧ (𝑥(2nd𝑅)𝑧) ∈ 𝐶))
1081073ad2antr2 1191 . . . . . . 7 (((𝑅 ∈ RingOps ∧ (𝑘𝐶𝑥𝑘)) ∧ (𝐶 ≠ ∅ ∧ 𝐶 ⊆ (Idl‘𝑅) ∧ ∀𝑖𝐶𝑗𝐶 (𝑖𝑗𝑗𝑖))) → ∀𝑧 ∈ ran (1st𝑅)((𝑧(2nd𝑅)𝑥) ∈ 𝐶 ∧ (𝑥(2nd𝑅)𝑧) ∈ 𝐶))
109108an32s 652 . . . . . 6 (((𝑅 ∈ RingOps ∧ (𝐶 ≠ ∅ ∧ 𝐶 ⊆ (Idl‘𝑅) ∧ ∀𝑖𝐶𝑗𝐶 (𝑖𝑗𝑗𝑖))) ∧ (𝑘𝐶𝑥𝑘)) → ∀𝑧 ∈ ran (1st𝑅)((𝑧(2nd𝑅)𝑥) ∈ 𝐶 ∧ (𝑥(2nd𝑅)𝑧) ∈ 𝐶))
11087, 109jca 515 . . . . 5 (((𝑅 ∈ RingOps ∧ (𝐶 ≠ ∅ ∧ 𝐶 ⊆ (Idl‘𝑅) ∧ ∀𝑖𝐶𝑗𝐶 (𝑖𝑗𝑗𝑖))) ∧ (𝑘𝐶𝑥𝑘)) → (∀𝑦 𝐶(𝑥(1st𝑅)𝑦) ∈ 𝐶 ∧ ∀𝑧 ∈ ran (1st𝑅)((𝑧(2nd𝑅)𝑥) ∈ 𝐶 ∧ (𝑥(2nd𝑅)𝑧) ∈ 𝐶)))
111110rexlimdvaa 3204 . . . 4 ((𝑅 ∈ RingOps ∧ (𝐶 ≠ ∅ ∧ 𝐶 ⊆ (Idl‘𝑅) ∧ ∀𝑖𝐶𝑗𝐶 (𝑖𝑗𝑗𝑖))) → (∃𝑘𝐶 𝑥𝑘 → (∀𝑦 𝐶(𝑥(1st𝑅)𝑦) ∈ 𝐶 ∧ ∀𝑧 ∈ ran (1st𝑅)((𝑧(2nd𝑅)𝑥) ∈ 𝐶 ∧ (𝑥(2nd𝑅)𝑧) ∈ 𝐶))))
11224, 111syl5bi 245 . . 3 ((𝑅 ∈ RingOps ∧ (𝐶 ≠ ∅ ∧ 𝐶 ⊆ (Idl‘𝑅) ∧ ∀𝑖𝐶𝑗𝐶 (𝑖𝑗𝑗𝑖))) → (𝑥 𝐶 → (∀𝑦 𝐶(𝑥(1st𝑅)𝑦) ∈ 𝐶 ∧ ∀𝑧 ∈ ran (1st𝑅)((𝑧(2nd𝑅)𝑥) ∈ 𝐶 ∧ (𝑥(2nd𝑅)𝑧) ∈ 𝐶))))
113112ralrimiv 3104 . 2 ((𝑅 ∈ RingOps ∧ (𝐶 ≠ ∅ ∧ 𝐶 ⊆ (Idl‘𝑅) ∧ ∀𝑖𝐶𝑗𝐶 (𝑖𝑗𝑗𝑖))) → ∀𝑥 𝐶(∀𝑦 𝐶(𝑥(1st𝑅)𝑦) ∈ 𝐶 ∧ ∀𝑧 ∈ ran (1st𝑅)((𝑧(2nd𝑅)𝑥) ∈ 𝐶 ∧ (𝑥(2nd𝑅)𝑧) ∈ 𝐶)))
1142, 88, 3, 12isidl 35909 . . 3 (𝑅 ∈ RingOps → ( 𝐶 ∈ (Idl‘𝑅) ↔ ( 𝐶 ⊆ ran (1st𝑅) ∧ (GId‘(1st𝑅)) ∈ 𝐶 ∧ ∀𝑥 𝐶(∀𝑦 𝐶(𝑥(1st𝑅)𝑦) ∈ 𝐶 ∧ ∀𝑧 ∈ ran (1st𝑅)((𝑧(2nd𝑅)𝑥) ∈ 𝐶 ∧ (𝑥(2nd𝑅)𝑧) ∈ 𝐶)))))
115114adantr 484 . 2 ((𝑅 ∈ RingOps ∧ (𝐶 ≠ ∅ ∧ 𝐶 ⊆ (Idl‘𝑅) ∧ ∀𝑖𝐶𝑗𝐶 (𝑖𝑗𝑗𝑖))) → ( 𝐶 ∈ (Idl‘𝑅) ↔ ( 𝐶 ⊆ ran (1st𝑅) ∧ (GId‘(1st𝑅)) ∈ 𝐶 ∧ ∀𝑥 𝐶(∀𝑦 𝐶(𝑥(1st𝑅)𝑦) ∈ 𝐶 ∧ ∀𝑧 ∈ ran (1st𝑅)((𝑧(2nd𝑅)𝑥) ∈ 𝐶 ∧ (𝑥(2nd𝑅)𝑧) ∈ 𝐶)))))
11611, 23, 113, 115mpbir3and 1344 1 ((𝑅 ∈ RingOps ∧ (𝐶 ≠ ∅ ∧ 𝐶 ⊆ (Idl‘𝑅) ∧ ∀𝑖𝐶𝑗𝐶 (𝑖𝑗𝑗𝑖))) → 𝐶 ∈ (Idl‘𝑅))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 209  wa 399  wo 847  w3a 1089  wcel 2110  wne 2940  wral 3061  wrex 3062  wss 3866  c0 4237   cuni 4819  ran crn 5552  cfv 6380  (class class class)co 7213  1st c1st 7759  2nd c2nd 7760  GIdcgi 28571  RingOpscrngo 35789  Idlcidl 35902
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1803  ax-4 1817  ax-5 1918  ax-6 1976  ax-7 2016  ax-8 2112  ax-9 2120  ax-10 2141  ax-11 2158  ax-12 2175  ax-ext 2708  ax-sep 5192  ax-nul 5199  ax-pow 5258  ax-pr 5322  ax-un 7523
This theorem depends on definitions:  df-bi 210  df-an 400  df-or 848  df-3an 1091  df-tru 1546  df-fal 1556  df-ex 1788  df-nf 1792  df-sb 2071  df-mo 2539  df-eu 2568  df-clab 2715  df-cleq 2729  df-clel 2816  df-nfc 2886  df-ne 2941  df-ral 3066  df-rex 3067  df-rab 3070  df-v 3410  df-dif 3869  df-un 3871  df-in 3873  df-ss 3883  df-nul 4238  df-if 4440  df-pw 4515  df-sn 4542  df-pr 4544  df-op 4548  df-uni 4820  df-br 5054  df-opab 5116  df-mpt 5136  df-id 5455  df-xp 5557  df-rel 5558  df-cnv 5559  df-co 5560  df-dm 5561  df-rn 5562  df-iota 6338  df-fun 6382  df-fv 6388  df-ov 7216  df-idl 35905
This theorem is referenced by: (None)
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