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Theorem efgval2 18183
Description: Value of the free group construction. (Contributed by Mario Carneiro, 27-Sep-2015.)
Hypotheses
Ref Expression
efgval.w 𝑊 = ( I ‘Word (𝐼 × 2𝑜))
efgval.r = ( ~FG𝐼)
efgval2.m 𝑀 = (𝑦𝐼, 𝑧 ∈ 2𝑜 ↦ ⟨𝑦, (1𝑜𝑧)⟩)
efgval2.t 𝑇 = (𝑣𝑊 ↦ (𝑛 ∈ (0...(#‘𝑣)), 𝑤 ∈ (𝐼 × 2𝑜) ↦ (𝑣 splice ⟨𝑛, 𝑛, ⟨“𝑤(𝑀𝑤)”⟩⟩)))
Assertion
Ref Expression
efgval2 = {𝑟 ∣ (𝑟 Er 𝑊 ∧ ∀𝑥𝑊 ran (𝑇𝑥) ⊆ [𝑥]𝑟)}
Distinct variable groups:   𝑦,𝑟,𝑧   𝑣,𝑛,𝑤,𝑦,𝑧,𝑟,𝑥   𝑛,𝑀   𝑣,𝑟,𝑤,𝑥,𝑀   𝑇,𝑟,𝑥   𝑛,𝑊,𝑟,𝑣,𝑤   𝑥,𝑦,𝑧,𝑊   ,𝑟,𝑥,𝑦,𝑧   𝑛,𝐼,𝑟,𝑣,𝑤,𝑥,𝑦,𝑧
Allowed substitution hints:   (𝑤,𝑣,𝑛)   𝑇(𝑦,𝑧,𝑤,𝑣,𝑛)   𝑀(𝑦,𝑧)

Proof of Theorem efgval2
Dummy variables 𝑎 𝑏 𝑢 𝑚 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 efgval.w . . 3 𝑊 = ( I ‘Word (𝐼 × 2𝑜))
2 efgval.r . . 3 = ( ~FG𝐼)
31, 2efgval 18176 . 2 = {𝑟 ∣ (𝑟 Er 𝑊 ∧ ∀𝑥𝑊𝑚 ∈ (0...(#‘𝑥))∀𝑎𝐼𝑏 ∈ 2𝑜 𝑥𝑟(𝑥 splice ⟨𝑚, 𝑚, ⟨“⟨𝑎, 𝑏⟩⟨𝑎, (1𝑜𝑏)⟩”⟩⟩))}
4 efgval2.m . . . . . . . . . . 11 𝑀 = (𝑦𝐼, 𝑧 ∈ 2𝑜 ↦ ⟨𝑦, (1𝑜𝑧)⟩)
5 efgval2.t . . . . . . . . . . 11 𝑇 = (𝑣𝑊 ↦ (𝑛 ∈ (0...(#‘𝑣)), 𝑤 ∈ (𝐼 × 2𝑜) ↦ (𝑣 splice ⟨𝑛, 𝑛, ⟨“𝑤(𝑀𝑤)”⟩⟩)))
61, 2, 4, 5efgtf 18181 . . . . . . . . . 10 (𝑥𝑊 → ((𝑇𝑥) = (𝑚 ∈ (0...(#‘𝑥)), 𝑢 ∈ (𝐼 × 2𝑜) ↦ (𝑥 splice ⟨𝑚, 𝑚, ⟨“𝑢(𝑀𝑢)”⟩⟩)) ∧ (𝑇𝑥):((0...(#‘𝑥)) × (𝐼 × 2𝑜))⟶𝑊))
76simpld 474 . . . . . . . . 9 (𝑥𝑊 → (𝑇𝑥) = (𝑚 ∈ (0...(#‘𝑥)), 𝑢 ∈ (𝐼 × 2𝑜) ↦ (𝑥 splice ⟨𝑚, 𝑚, ⟨“𝑢(𝑀𝑢)”⟩⟩)))
87rneqd 5385 . . . . . . . 8 (𝑥𝑊 → ran (𝑇𝑥) = ran (𝑚 ∈ (0...(#‘𝑥)), 𝑢 ∈ (𝐼 × 2𝑜) ↦ (𝑥 splice ⟨𝑚, 𝑚, ⟨“𝑢(𝑀𝑢)”⟩⟩)))
98sseq1d 3665 . . . . . . 7 (𝑥𝑊 → (ran (𝑇𝑥) ⊆ [𝑥]𝑟 ↔ ran (𝑚 ∈ (0...(#‘𝑥)), 𝑢 ∈ (𝐼 × 2𝑜) ↦ (𝑥 splice ⟨𝑚, 𝑚, ⟨“𝑢(𝑀𝑢)”⟩⟩)) ⊆ [𝑥]𝑟))
10 dfss3 3625 . . . . . . . 8 (ran (𝑚 ∈ (0...(#‘𝑥)), 𝑢 ∈ (𝐼 × 2𝑜) ↦ (𝑥 splice ⟨𝑚, 𝑚, ⟨“𝑢(𝑀𝑢)”⟩⟩)) ⊆ [𝑥]𝑟 ↔ ∀𝑎 ∈ ran (𝑚 ∈ (0...(#‘𝑥)), 𝑢 ∈ (𝐼 × 2𝑜) ↦ (𝑥 splice ⟨𝑚, 𝑚, ⟨“𝑢(𝑀𝑢)”⟩⟩))𝑎 ∈ [𝑥]𝑟)
11 ovex 6718 . . . . . . . . . . 11 (𝑥 splice ⟨𝑚, 𝑚, ⟨“𝑢(𝑀𝑢)”⟩⟩) ∈ V
1211rgen2w 2954 . . . . . . . . . 10 𝑚 ∈ (0...(#‘𝑥))∀𝑢 ∈ (𝐼 × 2𝑜)(𝑥 splice ⟨𝑚, 𝑚, ⟨“𝑢(𝑀𝑢)”⟩⟩) ∈ V
13 eqid 2651 . . . . . . . . . . 11 (𝑚 ∈ (0...(#‘𝑥)), 𝑢 ∈ (𝐼 × 2𝑜) ↦ (𝑥 splice ⟨𝑚, 𝑚, ⟨“𝑢(𝑀𝑢)”⟩⟩)) = (𝑚 ∈ (0...(#‘𝑥)), 𝑢 ∈ (𝐼 × 2𝑜) ↦ (𝑥 splice ⟨𝑚, 𝑚, ⟨“𝑢(𝑀𝑢)”⟩⟩))
14 vex 3234 . . . . . . . . . . . . 13 𝑎 ∈ V
15 vex 3234 . . . . . . . . . . . . 13 𝑥 ∈ V
1614, 15elec 7829 . . . . . . . . . . . 12 (𝑎 ∈ [𝑥]𝑟𝑥𝑟𝑎)
17 breq2 4689 . . . . . . . . . . . 12 (𝑎 = (𝑥 splice ⟨𝑚, 𝑚, ⟨“𝑢(𝑀𝑢)”⟩⟩) → (𝑥𝑟𝑎𝑥𝑟(𝑥 splice ⟨𝑚, 𝑚, ⟨“𝑢(𝑀𝑢)”⟩⟩)))
1816, 17syl5bb 272 . . . . . . . . . . 11 (𝑎 = (𝑥 splice ⟨𝑚, 𝑚, ⟨“𝑢(𝑀𝑢)”⟩⟩) → (𝑎 ∈ [𝑥]𝑟𝑥𝑟(𝑥 splice ⟨𝑚, 𝑚, ⟨“𝑢(𝑀𝑢)”⟩⟩)))
1913, 18ralrnmpt2 6817 . . . . . . . . . 10 (∀𝑚 ∈ (0...(#‘𝑥))∀𝑢 ∈ (𝐼 × 2𝑜)(𝑥 splice ⟨𝑚, 𝑚, ⟨“𝑢(𝑀𝑢)”⟩⟩) ∈ V → (∀𝑎 ∈ ran (𝑚 ∈ (0...(#‘𝑥)), 𝑢 ∈ (𝐼 × 2𝑜) ↦ (𝑥 splice ⟨𝑚, 𝑚, ⟨“𝑢(𝑀𝑢)”⟩⟩))𝑎 ∈ [𝑥]𝑟 ↔ ∀𝑚 ∈ (0...(#‘𝑥))∀𝑢 ∈ (𝐼 × 2𝑜)𝑥𝑟(𝑥 splice ⟨𝑚, 𝑚, ⟨“𝑢(𝑀𝑢)”⟩⟩)))
2012, 19ax-mp 5 . . . . . . . . 9 (∀𝑎 ∈ ran (𝑚 ∈ (0...(#‘𝑥)), 𝑢 ∈ (𝐼 × 2𝑜) ↦ (𝑥 splice ⟨𝑚, 𝑚, ⟨“𝑢(𝑀𝑢)”⟩⟩))𝑎 ∈ [𝑥]𝑟 ↔ ∀𝑚 ∈ (0...(#‘𝑥))∀𝑢 ∈ (𝐼 × 2𝑜)𝑥𝑟(𝑥 splice ⟨𝑚, 𝑚, ⟨“𝑢(𝑀𝑢)”⟩⟩))
21 id 22 . . . . . . . . . . . . . . . 16 (𝑢 = ⟨𝑎, 𝑏⟩ → 𝑢 = ⟨𝑎, 𝑏⟩)
22 fveq2 6229 . . . . . . . . . . . . . . . . 17 (𝑢 = ⟨𝑎, 𝑏⟩ → (𝑀𝑢) = (𝑀‘⟨𝑎, 𝑏⟩))
23 df-ov 6693 . . . . . . . . . . . . . . . . 17 (𝑎𝑀𝑏) = (𝑀‘⟨𝑎, 𝑏⟩)
2422, 23syl6eqr 2703 . . . . . . . . . . . . . . . 16 (𝑢 = ⟨𝑎, 𝑏⟩ → (𝑀𝑢) = (𝑎𝑀𝑏))
2521, 24s2eqd 13654 . . . . . . . . . . . . . . 15 (𝑢 = ⟨𝑎, 𝑏⟩ → ⟨“𝑢(𝑀𝑢)”⟩ = ⟨“⟨𝑎, 𝑏⟩(𝑎𝑀𝑏)”⟩)
2625oteq3d 4447 . . . . . . . . . . . . . 14 (𝑢 = ⟨𝑎, 𝑏⟩ → ⟨𝑚, 𝑚, ⟨“𝑢(𝑀𝑢)”⟩⟩ = ⟨𝑚, 𝑚, ⟨“⟨𝑎, 𝑏⟩(𝑎𝑀𝑏)”⟩⟩)
2726oveq2d 6706 . . . . . . . . . . . . 13 (𝑢 = ⟨𝑎, 𝑏⟩ → (𝑥 splice ⟨𝑚, 𝑚, ⟨“𝑢(𝑀𝑢)”⟩⟩) = (𝑥 splice ⟨𝑚, 𝑚, ⟨“⟨𝑎, 𝑏⟩(𝑎𝑀𝑏)”⟩⟩))
2827breq2d 4697 . . . . . . . . . . . 12 (𝑢 = ⟨𝑎, 𝑏⟩ → (𝑥𝑟(𝑥 splice ⟨𝑚, 𝑚, ⟨“𝑢(𝑀𝑢)”⟩⟩) ↔ 𝑥𝑟(𝑥 splice ⟨𝑚, 𝑚, ⟨“⟨𝑎, 𝑏⟩(𝑎𝑀𝑏)”⟩⟩)))
2928ralxp 5296 . . . . . . . . . . 11 (∀𝑢 ∈ (𝐼 × 2𝑜)𝑥𝑟(𝑥 splice ⟨𝑚, 𝑚, ⟨“𝑢(𝑀𝑢)”⟩⟩) ↔ ∀𝑎𝐼𝑏 ∈ 2𝑜 𝑥𝑟(𝑥 splice ⟨𝑚, 𝑚, ⟨“⟨𝑎, 𝑏⟩(𝑎𝑀𝑏)”⟩⟩))
30 eqidd 2652 . . . . . . . . . . . . . . . . 17 ((𝑎𝐼𝑏 ∈ 2𝑜) → ⟨𝑎, 𝑏⟩ = ⟨𝑎, 𝑏⟩)
314efgmval 18171 . . . . . . . . . . . . . . . . 17 ((𝑎𝐼𝑏 ∈ 2𝑜) → (𝑎𝑀𝑏) = ⟨𝑎, (1𝑜𝑏)⟩)
3230, 31s2eqd 13654 . . . . . . . . . . . . . . . 16 ((𝑎𝐼𝑏 ∈ 2𝑜) → ⟨“⟨𝑎, 𝑏⟩(𝑎𝑀𝑏)”⟩ = ⟨“⟨𝑎, 𝑏⟩⟨𝑎, (1𝑜𝑏)⟩”⟩)
3332oteq3d 4447 . . . . . . . . . . . . . . 15 ((𝑎𝐼𝑏 ∈ 2𝑜) → ⟨𝑚, 𝑚, ⟨“⟨𝑎, 𝑏⟩(𝑎𝑀𝑏)”⟩⟩ = ⟨𝑚, 𝑚, ⟨“⟨𝑎, 𝑏⟩⟨𝑎, (1𝑜𝑏)⟩”⟩⟩)
3433oveq2d 6706 . . . . . . . . . . . . . 14 ((𝑎𝐼𝑏 ∈ 2𝑜) → (𝑥 splice ⟨𝑚, 𝑚, ⟨“⟨𝑎, 𝑏⟩(𝑎𝑀𝑏)”⟩⟩) = (𝑥 splice ⟨𝑚, 𝑚, ⟨“⟨𝑎, 𝑏⟩⟨𝑎, (1𝑜𝑏)⟩”⟩⟩))
3534breq2d 4697 . . . . . . . . . . . . 13 ((𝑎𝐼𝑏 ∈ 2𝑜) → (𝑥𝑟(𝑥 splice ⟨𝑚, 𝑚, ⟨“⟨𝑎, 𝑏⟩(𝑎𝑀𝑏)”⟩⟩) ↔ 𝑥𝑟(𝑥 splice ⟨𝑚, 𝑚, ⟨“⟨𝑎, 𝑏⟩⟨𝑎, (1𝑜𝑏)⟩”⟩⟩)))
3635ralbidva 3014 . . . . . . . . . . . 12 (𝑎𝐼 → (∀𝑏 ∈ 2𝑜 𝑥𝑟(𝑥 splice ⟨𝑚, 𝑚, ⟨“⟨𝑎, 𝑏⟩(𝑎𝑀𝑏)”⟩⟩) ↔ ∀𝑏 ∈ 2𝑜 𝑥𝑟(𝑥 splice ⟨𝑚, 𝑚, ⟨“⟨𝑎, 𝑏⟩⟨𝑎, (1𝑜𝑏)⟩”⟩⟩)))
3736ralbiia 3008 . . . . . . . . . . 11 (∀𝑎𝐼𝑏 ∈ 2𝑜 𝑥𝑟(𝑥 splice ⟨𝑚, 𝑚, ⟨“⟨𝑎, 𝑏⟩(𝑎𝑀𝑏)”⟩⟩) ↔ ∀𝑎𝐼𝑏 ∈ 2𝑜 𝑥𝑟(𝑥 splice ⟨𝑚, 𝑚, ⟨“⟨𝑎, 𝑏⟩⟨𝑎, (1𝑜𝑏)⟩”⟩⟩))
3829, 37bitri 264 . . . . . . . . . 10 (∀𝑢 ∈ (𝐼 × 2𝑜)𝑥𝑟(𝑥 splice ⟨𝑚, 𝑚, ⟨“𝑢(𝑀𝑢)”⟩⟩) ↔ ∀𝑎𝐼𝑏 ∈ 2𝑜 𝑥𝑟(𝑥 splice ⟨𝑚, 𝑚, ⟨“⟨𝑎, 𝑏⟩⟨𝑎, (1𝑜𝑏)⟩”⟩⟩))
3938ralbii 3009 . . . . . . . . 9 (∀𝑚 ∈ (0...(#‘𝑥))∀𝑢 ∈ (𝐼 × 2𝑜)𝑥𝑟(𝑥 splice ⟨𝑚, 𝑚, ⟨“𝑢(𝑀𝑢)”⟩⟩) ↔ ∀𝑚 ∈ (0...(#‘𝑥))∀𝑎𝐼𝑏 ∈ 2𝑜 𝑥𝑟(𝑥 splice ⟨𝑚, 𝑚, ⟨“⟨𝑎, 𝑏⟩⟨𝑎, (1𝑜𝑏)⟩”⟩⟩))
4020, 39bitri 264 . . . . . . . 8 (∀𝑎 ∈ ran (𝑚 ∈ (0...(#‘𝑥)), 𝑢 ∈ (𝐼 × 2𝑜) ↦ (𝑥 splice ⟨𝑚, 𝑚, ⟨“𝑢(𝑀𝑢)”⟩⟩))𝑎 ∈ [𝑥]𝑟 ↔ ∀𝑚 ∈ (0...(#‘𝑥))∀𝑎𝐼𝑏 ∈ 2𝑜 𝑥𝑟(𝑥 splice ⟨𝑚, 𝑚, ⟨“⟨𝑎, 𝑏⟩⟨𝑎, (1𝑜𝑏)⟩”⟩⟩))
4110, 40bitri 264 . . . . . . 7 (ran (𝑚 ∈ (0...(#‘𝑥)), 𝑢 ∈ (𝐼 × 2𝑜) ↦ (𝑥 splice ⟨𝑚, 𝑚, ⟨“𝑢(𝑀𝑢)”⟩⟩)) ⊆ [𝑥]𝑟 ↔ ∀𝑚 ∈ (0...(#‘𝑥))∀𝑎𝐼𝑏 ∈ 2𝑜 𝑥𝑟(𝑥 splice ⟨𝑚, 𝑚, ⟨“⟨𝑎, 𝑏⟩⟨𝑎, (1𝑜𝑏)⟩”⟩⟩))
429, 41syl6bb 276 . . . . . 6 (𝑥𝑊 → (ran (𝑇𝑥) ⊆ [𝑥]𝑟 ↔ ∀𝑚 ∈ (0...(#‘𝑥))∀𝑎𝐼𝑏 ∈ 2𝑜 𝑥𝑟(𝑥 splice ⟨𝑚, 𝑚, ⟨“⟨𝑎, 𝑏⟩⟨𝑎, (1𝑜𝑏)⟩”⟩⟩)))
4342ralbiia 3008 . . . . 5 (∀𝑥𝑊 ran (𝑇𝑥) ⊆ [𝑥]𝑟 ↔ ∀𝑥𝑊𝑚 ∈ (0...(#‘𝑥))∀𝑎𝐼𝑏 ∈ 2𝑜 𝑥𝑟(𝑥 splice ⟨𝑚, 𝑚, ⟨“⟨𝑎, 𝑏⟩⟨𝑎, (1𝑜𝑏)⟩”⟩⟩))
4443anbi2i 730 . . . 4 ((𝑟 Er 𝑊 ∧ ∀𝑥𝑊 ran (𝑇𝑥) ⊆ [𝑥]𝑟) ↔ (𝑟 Er 𝑊 ∧ ∀𝑥𝑊𝑚 ∈ (0...(#‘𝑥))∀𝑎𝐼𝑏 ∈ 2𝑜 𝑥𝑟(𝑥 splice ⟨𝑚, 𝑚, ⟨“⟨𝑎, 𝑏⟩⟨𝑎, (1𝑜𝑏)⟩”⟩⟩)))
4544abbii 2768 . . 3 {𝑟 ∣ (𝑟 Er 𝑊 ∧ ∀𝑥𝑊 ran (𝑇𝑥) ⊆ [𝑥]𝑟)} = {𝑟 ∣ (𝑟 Er 𝑊 ∧ ∀𝑥𝑊𝑚 ∈ (0...(#‘𝑥))∀𝑎𝐼𝑏 ∈ 2𝑜 𝑥𝑟(𝑥 splice ⟨𝑚, 𝑚, ⟨“⟨𝑎, 𝑏⟩⟨𝑎, (1𝑜𝑏)⟩”⟩⟩))}
4645inteqi 4511 . 2 {𝑟 ∣ (𝑟 Er 𝑊 ∧ ∀𝑥𝑊 ran (𝑇𝑥) ⊆ [𝑥]𝑟)} = {𝑟 ∣ (𝑟 Er 𝑊 ∧ ∀𝑥𝑊𝑚 ∈ (0...(#‘𝑥))∀𝑎𝐼𝑏 ∈ 2𝑜 𝑥𝑟(𝑥 splice ⟨𝑚, 𝑚, ⟨“⟨𝑎, 𝑏⟩⟨𝑎, (1𝑜𝑏)⟩”⟩⟩))}
473, 46eqtr4i 2676 1 = {𝑟 ∣ (𝑟 Er 𝑊 ∧ ∀𝑥𝑊 ran (𝑇𝑥) ⊆ [𝑥]𝑟)}
Colors of variables: wff setvar class
Syntax hints:  wb 196  wa 383   = wceq 1523  wcel 2030  {cab 2637  wral 2941  Vcvv 3231  cdif 3604  wss 3607  cop 4216  cotp 4218   cint 4507   class class class wbr 4685  cmpt 4762   I cid 5052   × cxp 5141  ran crn 5144  wf 5922  cfv 5926  (class class class)co 6690  cmpt2 6692  1𝑜c1o 7598  2𝑜c2o 7599   Er wer 7784  [cec 7785  0cc0 9974  ...cfz 12364  #chash 13157  Word cword 13323   splice csplice 13328  ⟨“cs2 13632   ~FG cefg 18165
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1762  ax-4 1777  ax-5 1879  ax-6 1945  ax-7 1981  ax-8 2032  ax-9 2039  ax-10 2059  ax-11 2074  ax-12 2087  ax-13 2282  ax-ext 2631  ax-rep 4804  ax-sep 4814  ax-nul 4822  ax-pow 4873  ax-pr 4936  ax-un 6991  ax-cnex 10030  ax-resscn 10031  ax-1cn 10032  ax-icn 10033  ax-addcl 10034  ax-addrcl 10035  ax-mulcl 10036  ax-mulrcl 10037  ax-mulcom 10038  ax-addass 10039  ax-mulass 10040  ax-distr 10041  ax-i2m1 10042  ax-1ne0 10043  ax-1rid 10044  ax-rnegex 10045  ax-rrecex 10046  ax-cnre 10047  ax-pre-lttri 10048  ax-pre-lttrn 10049  ax-pre-ltadd 10050  ax-pre-mulgt0 10051
This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3or 1055  df-3an 1056  df-tru 1526  df-ex 1745  df-nf 1750  df-sb 1938  df-eu 2502  df-mo 2503  df-clab 2638  df-cleq 2644  df-clel 2647  df-nfc 2782  df-ne 2824  df-nel 2927  df-ral 2946  df-rex 2947  df-reu 2948  df-rab 2950  df-v 3233  df-sbc 3469  df-csb 3567  df-dif 3610  df-un 3612  df-in 3614  df-ss 3621  df-pss 3623  df-nul 3949  df-if 4120  df-pw 4193  df-sn 4211  df-pr 4213  df-tp 4215  df-op 4217  df-ot 4219  df-uni 4469  df-int 4508  df-iun 4554  df-br 4686  df-opab 4746  df-mpt 4763  df-tr 4786  df-id 5053  df-eprel 5058  df-po 5064  df-so 5065  df-fr 5102  df-we 5104  df-xp 5149  df-rel 5150  df-cnv 5151  df-co 5152  df-dm 5153  df-rn 5154  df-res 5155  df-ima 5156  df-pred 5718  df-ord 5764  df-on 5765  df-lim 5766  df-suc 5767  df-iota 5889  df-fun 5928  df-fn 5929  df-f 5930  df-f1 5931  df-fo 5932  df-f1o 5933  df-fv 5934  df-riota 6651  df-ov 6693  df-oprab 6694  df-mpt2 6695  df-om 7108  df-1st 7210  df-2nd 7211  df-wrecs 7452  df-recs 7513  df-rdg 7551  df-1o 7605  df-2o 7606  df-oadd 7609  df-er 7787  df-ec 7789  df-map 7901  df-pm 7902  df-en 7998  df-dom 7999  df-sdom 8000  df-fin 8001  df-card 8803  df-pnf 10114  df-mnf 10115  df-xr 10116  df-ltxr 10117  df-le 10118  df-sub 10306  df-neg 10307  df-nn 11059  df-n0 11331  df-z 11416  df-uz 11726  df-fz 12365  df-fzo 12505  df-hash 13158  df-word 13331  df-concat 13333  df-s1 13334  df-substr 13335  df-splice 13336  df-s2 13639  df-efg 18168
This theorem is referenced by:  efgi2  18184  efgrelexlemb  18209  efgcpbllemb  18214
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