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Theorem idomsubr 33409
Description: Every integral domain is isomorphic with a subring of some field. (Proposed by Gerard Lang, 10-May-2025.) (Contributed by Thierry Arnoux, 10-May-2025.)
Hypothesis
Ref Expression
idomsubr.1 (𝜑𝑅 ∈ IDomn)
Assertion
Ref Expression
idomsubr (𝜑 → ∃𝑓 ∈ Field ∃𝑠 ∈ (SubRing‘𝑓)𝑅𝑟 (𝑓s 𝑠))
Distinct variable groups:   𝑅,𝑓,𝑠   𝜑,𝑓,𝑠

Proof of Theorem idomsubr
Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 fveq2 6844 . . 3 (𝑓 = ( Frac ‘𝑅) → (SubRing‘𝑓) = (SubRing‘( Frac ‘𝑅)))
2 oveq1 7377 . . . 4 (𝑓 = ( Frac ‘𝑅) → (𝑓s 𝑠) = (( Frac ‘𝑅) ↾s 𝑠))
32breq2d 5112 . . 3 (𝑓 = ( Frac ‘𝑅) → (𝑅𝑟 (𝑓s 𝑠) ↔ 𝑅𝑟 (( Frac ‘𝑅) ↾s 𝑠)))
41, 3rexeqbidv 3319 . 2 (𝑓 = ( Frac ‘𝑅) → (∃𝑠 ∈ (SubRing‘𝑓)𝑅𝑟 (𝑓s 𝑠) ↔ ∃𝑠 ∈ (SubRing‘( Frac ‘𝑅))𝑅𝑟 (( Frac ‘𝑅) ↾s 𝑠)))
5 idomsubr.1 . . 3 (𝜑𝑅 ∈ IDomn)
65fracfld 33408 . 2 (𝜑 → ( Frac ‘𝑅) ∈ Field)
7 oveq2 7378 . . . 4 (𝑠 = ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))) → (( Frac ‘𝑅) ↾s 𝑠) = (( Frac ‘𝑅) ↾s ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅)))))
87breq2d 5112 . . 3 (𝑠 = ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))) → (𝑅𝑟 (( Frac ‘𝑅) ↾s 𝑠) ↔ 𝑅𝑟 (( Frac ‘𝑅) ↾s ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))))))
9 eqid 2737 . . . . 5 (Base‘𝑅) = (Base‘𝑅)
10 eqid 2737 . . . . 5 (RLReg‘𝑅) = (RLReg‘𝑅)
11 eqid 2737 . . . . 5 (1r𝑅) = (1r𝑅)
125idomcringd 20677 . . . . 5 (𝜑𝑅 ∈ CRing)
13 eqid 2737 . . . . 5 (𝑅 ~RL (RLReg‘𝑅)) = (𝑅 ~RL (RLReg‘𝑅))
14 opeq1 4831 . . . . . . 7 (𝑥 = 𝑦 → ⟨𝑥, (1r𝑅)⟩ = ⟨𝑦, (1r𝑅)⟩)
1514eceq1d 8688 . . . . . 6 (𝑥 = 𝑦 → [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅)) = [⟨𝑦, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅)))
1615cbvmptv 5204 . . . . 5 (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))) = (𝑦 ∈ (Base‘𝑅) ↦ [⟨𝑦, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅)))
179, 10, 11, 12, 13, 16fracf1 33407 . . . 4 (𝜑 → ((𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))):(Base‘𝑅)–1-1→(((Base‘𝑅) × (RLReg‘𝑅)) / (𝑅 ~RL (RLReg‘𝑅))) ∧ (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))) ∈ (𝑅 RingHom ( Frac ‘𝑅))))
18 rnrhmsubrg 20555 . . . 4 ((𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))) ∈ (𝑅 RingHom ( Frac ‘𝑅)) → ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))) ∈ (SubRing‘( Frac ‘𝑅)))
1917, 18simpl2im 503 . . 3 (𝜑 → ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))) ∈ (SubRing‘( Frac ‘𝑅)))
20 ssidd 3959 . . . . . 6 (𝜑 → ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))) ⊆ ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))))
2117simprd 495 . . . . . 6 (𝜑 → (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))) ∈ (𝑅 RingHom ( Frac ‘𝑅)))
22 eqid 2737 . . . . . . . 8 (( Frac ‘𝑅) ↾s ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅)))) = (( Frac ‘𝑅) ↾s ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))))
2322resrhm2b 20552 . . . . . . 7 ((ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))) ∈ (SubRing‘( Frac ‘𝑅)) ∧ ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))) ⊆ ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅)))) → ((𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))) ∈ (𝑅 RingHom ( Frac ‘𝑅)) ↔ (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))) ∈ (𝑅 RingHom (( Frac ‘𝑅) ↾s ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅)))))))
2423biimpa 476 . . . . . 6 (((ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))) ∈ (SubRing‘( Frac ‘𝑅)) ∧ ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))) ⊆ ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅)))) ∧ (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))) ∈ (𝑅 RingHom ( Frac ‘𝑅))) → (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))) ∈ (𝑅 RingHom (( Frac ‘𝑅) ↾s ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))))))
2519, 20, 21, 24syl21anc 838 . . . . 5 (𝜑 → (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))) ∈ (𝑅 RingHom (( Frac ‘𝑅) ↾s ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))))))
2617simpld 494 . . . . . . 7 (𝜑 → (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))):(Base‘𝑅)–1-1→(((Base‘𝑅) × (RLReg‘𝑅)) / (𝑅 ~RL (RLReg‘𝑅))))
27 f1f1orn 6795 . . . . . . 7 ((𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))):(Base‘𝑅)–1-1→(((Base‘𝑅) × (RLReg‘𝑅)) / (𝑅 ~RL (RLReg‘𝑅))) → (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))):(Base‘𝑅)–1-1-onto→ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))))
2826, 27syl 17 . . . . . 6 (𝜑 → (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))):(Base‘𝑅)–1-1-onto→ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))))
29 f1f 6740 . . . . . . . . . . 11 ((𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))):(Base‘𝑅)–1-1→(((Base‘𝑅) × (RLReg‘𝑅)) / (𝑅 ~RL (RLReg‘𝑅))) → (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))):(Base‘𝑅)⟶(((Base‘𝑅) × (RLReg‘𝑅)) / (𝑅 ~RL (RLReg‘𝑅))))
3026, 29syl 17 . . . . . . . . . 10 (𝜑 → (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))):(Base‘𝑅)⟶(((Base‘𝑅) × (RLReg‘𝑅)) / (𝑅 ~RL (RLReg‘𝑅))))
3130frnd 6680 . . . . . . . . 9 (𝜑 → ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))) ⊆ (((Base‘𝑅) × (RLReg‘𝑅)) / (𝑅 ~RL (RLReg‘𝑅))))
32 eqid 2737 . . . . . . . . . 10 ( Frac ‘𝑅) = ( Frac ‘𝑅)
339, 10, 32, 13fracbas 33405 . . . . . . . . 9 (((Base‘𝑅) × (RLReg‘𝑅)) / (𝑅 ~RL (RLReg‘𝑅))) = (Base‘( Frac ‘𝑅))
3431, 33sseqtrdi 3976 . . . . . . . 8 (𝜑 → ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))) ⊆ (Base‘( Frac ‘𝑅)))
35 eqid 2737 . . . . . . . . 9 (Base‘( Frac ‘𝑅)) = (Base‘( Frac ‘𝑅))
3622, 35ressbas2 17179 . . . . . . . 8 (ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))) ⊆ (Base‘( Frac ‘𝑅)) → ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))) = (Base‘(( Frac ‘𝑅) ↾s ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))))))
3734, 36syl 17 . . . . . . 7 (𝜑 → ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))) = (Base‘(( Frac ‘𝑅) ↾s ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))))))
3837f1oeq3d 6781 . . . . . 6 (𝜑 → ((𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))):(Base‘𝑅)–1-1-onto→ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))) ↔ (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))):(Base‘𝑅)–1-1-onto→(Base‘(( Frac ‘𝑅) ↾s ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅)))))))
3928, 38mpbid 232 . . . . 5 (𝜑 → (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))):(Base‘𝑅)–1-1-onto→(Base‘(( Frac ‘𝑅) ↾s ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))))))
40 eqid 2737 . . . . . 6 (Base‘(( Frac ‘𝑅) ↾s ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))))) = (Base‘(( Frac ‘𝑅) ↾s ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅)))))
419, 40isrim 20444 . . . . 5 ((𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))) ∈ (𝑅 RingIso (( Frac ‘𝑅) ↾s ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))))) ↔ ((𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))) ∈ (𝑅 RingHom (( Frac ‘𝑅) ↾s ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))))) ∧ (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))):(Base‘𝑅)–1-1-onto→(Base‘(( Frac ‘𝑅) ↾s ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅)))))))
4225, 39, 41sylanbrc 584 . . . 4 (𝜑 → (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))) ∈ (𝑅 RingIso (( Frac ‘𝑅) ↾s ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))))))
43 brrici 20455 . . . 4 ((𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))) ∈ (𝑅 RingIso (( Frac ‘𝑅) ↾s ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅))))) → 𝑅𝑟 (( Frac ‘𝑅) ↾s ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅)))))
4442, 43syl 17 . . 3 (𝜑𝑅𝑟 (( Frac ‘𝑅) ↾s ran (𝑥 ∈ (Base‘𝑅) ↦ [⟨𝑥, (1r𝑅)⟩](𝑅 ~RL (RLReg‘𝑅)))))
458, 19, 44rspcedvdw 3581 . 2 (𝜑 → ∃𝑠 ∈ (SubRing‘( Frac ‘𝑅))𝑅𝑟 (( Frac ‘𝑅) ↾s 𝑠))
464, 6, 45rspcedvdw 3581 1 (𝜑 → ∃𝑓 ∈ Field ∃𝑠 ∈ (SubRing‘𝑓)𝑅𝑟 (𝑓s 𝑠))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 395   = wceq 1542  wcel 2114  wrex 3062  wss 3903  cop 4588   class class class wbr 5100  cmpt 5181   × cxp 5632  ran crn 5635  wf 6498  1-1wf1 6499  1-1-ontowf1o 6501  cfv 6502  (class class class)co 7370  [cec 8645   / cqs 8646  Basecbs 17150  s cress 17171  1rcur 20133   RingHom crh 20422   RingIso crs 20423  𝑟 cric 20424  SubRingcsubrg 20519  RLRegcrlreg 20641  IDomncidom 20643  Fieldcfield 20680   ~RL cerl 33353   Frac cfrac 33402
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-10 2147  ax-11 2163  ax-12 2185  ax-ext 2709  ax-rep 5226  ax-sep 5245  ax-nul 5255  ax-pow 5314  ax-pr 5381  ax-un 7692  ax-cnex 11096  ax-resscn 11097  ax-1cn 11098  ax-icn 11099  ax-addcl 11100  ax-addrcl 11101  ax-mulcl 11102  ax-mulrcl 11103  ax-mulcom 11104  ax-addass 11105  ax-mulass 11106  ax-distr 11107  ax-i2m1 11108  ax-1ne0 11109  ax-1rid 11110  ax-rnegex 11111  ax-rrecex 11112  ax-cnre 11113  ax-pre-lttri 11114  ax-pre-lttrn 11115  ax-pre-ltadd 11116  ax-pre-mulgt0 11117
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3or 1088  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  df-mo 2540  df-eu 2570  df-clab 2716  df-cleq 2729  df-clel 2812  df-nfc 2886  df-ne 2934  df-nel 3038  df-ral 3053  df-rex 3063  df-rmo 3352  df-reu 3353  df-rab 3402  df-v 3444  df-sbc 3743  df-csb 3852  df-dif 3906  df-un 3908  df-in 3910  df-ss 3920  df-pss 3923  df-nul 4288  df-if 4482  df-pw 4558  df-sn 4583  df-pr 4585  df-tp 4587  df-op 4589  df-uni 4866  df-iun 4950  df-br 5101  df-opab 5163  df-mpt 5182  df-tr 5208  df-id 5529  df-eprel 5534  df-po 5542  df-so 5543  df-fr 5587  df-we 5589  df-xp 5640  df-rel 5641  df-cnv 5642  df-co 5643  df-dm 5644  df-rn 5645  df-res 5646  df-ima 5647  df-pred 6269  df-ord 6330  df-on 6331  df-lim 6332  df-suc 6333  df-iota 6458  df-fun 6504  df-fn 6505  df-f 6506  df-f1 6507  df-fo 6508  df-f1o 6509  df-fv 6510  df-riota 7327  df-ov 7373  df-oprab 7374  df-mpo 7375  df-om 7821  df-1st 7945  df-2nd 7946  df-tpos 8180  df-frecs 8235  df-wrecs 8266  df-recs 8315  df-rdg 8353  df-1o 8409  df-er 8647  df-ec 8649  df-qs 8653  df-map 8779  df-en 8898  df-dom 8899  df-sdom 8900  df-fin 8901  df-sup 9359  df-inf 9360  df-pnf 11182  df-mnf 11183  df-xr 11184  df-ltxr 11185  df-le 11186  df-sub 11380  df-neg 11381  df-nn 12160  df-2 12222  df-3 12223  df-4 12224  df-5 12225  df-6 12226  df-7 12227  df-8 12228  df-9 12229  df-n0 12416  df-z 12503  df-dec 12622  df-uz 12766  df-fz 13438  df-struct 17088  df-sets 17105  df-slot 17123  df-ndx 17135  df-base 17151  df-ress 17172  df-plusg 17204  df-mulr 17205  df-sca 17207  df-vsca 17208  df-ip 17209  df-tset 17210  df-ple 17211  df-ds 17213  df-0g 17375  df-imas 17443  df-qus 17444  df-mgm 18579  df-sgrp 18658  df-mnd 18674  df-mhm 18722  df-submnd 18723  df-grp 18883  df-minusg 18884  df-sbg 18885  df-subg 19070  df-ghm 19159  df-cmn 19728  df-abl 19729  df-mgp 20093  df-rng 20105  df-ur 20134  df-ring 20187  df-cring 20188  df-oppr 20290  df-dvdsr 20310  df-unit 20311  df-invr 20341  df-rhm 20425  df-rim 20426  df-ric 20428  df-nzr 20463  df-subrng 20496  df-subrg 20520  df-rlreg 20644  df-domn 20645  df-idom 20646  df-drng 20681  df-field 20682  df-erl 33355  df-rloc 33356  df-frac 33403
This theorem is referenced by: (None)
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