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Theorem satf0 32505
Description: The satisfaction predicate as function over wff codes in the empty model with an empty binary relation. (Contributed by AV, 14-Sep-2023.)
Assertion
Ref Expression
satf0 (∅ Sat ∅) = (rec((𝑓 ∈ V ↦ (𝑓 ∪ {⟨𝑥, 𝑦⟩ ∣ (𝑦 = ∅ ∧ ∃𝑢𝑓 (∃𝑣𝑓 𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st𝑢)))})), {⟨𝑥, 𝑦⟩ ∣ (𝑦 = ∅ ∧ ∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑥 = (𝑖𝑔𝑗))}) ↾ suc ω)
Distinct variable group:   𝑓,𝑖,𝑗,𝑢,𝑣,𝑥,𝑦

Proof of Theorem satf0
Dummy variables 𝑎 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 0ex 5207 . . 3 ∅ ∈ V
2 satf 32486 . . 3 ((∅ ∈ V ∧ ∅ ∈ V) → (∅ Sat ∅) = (rec((𝑓 ∈ V ↦ (𝑓 ∪ {⟨𝑥, 𝑦⟩ ∣ ∃𝑢𝑓 (∃𝑣𝑓 (𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∧ 𝑦 = ((∅ ↑m ω) ∖ ((2nd𝑢) ∩ (2nd𝑣)))) ∨ ∃𝑖 ∈ ω (𝑥 = ∀𝑔𝑖(1st𝑢) ∧ 𝑦 = {𝑎 ∈ (∅ ↑m ω) ∣ ∀𝑧 ∈ ∅ ({⟨𝑖, 𝑧⟩} ∪ (𝑎 ↾ (ω ∖ {𝑖}))) ∈ (2nd𝑢)}))})), {⟨𝑥, 𝑦⟩ ∣ ∃𝑖 ∈ ω ∃𝑗 ∈ ω (𝑥 = (𝑖𝑔𝑗) ∧ 𝑦 = {𝑎 ∈ (∅ ↑m ω) ∣ (𝑎𝑖)∅(𝑎𝑗)})}) ↾ suc ω))
31, 1, 2mp2an 688 . 2 (∅ Sat ∅) = (rec((𝑓 ∈ V ↦ (𝑓 ∪ {⟨𝑥, 𝑦⟩ ∣ ∃𝑢𝑓 (∃𝑣𝑓 (𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∧ 𝑦 = ((∅ ↑m ω) ∖ ((2nd𝑢) ∩ (2nd𝑣)))) ∨ ∃𝑖 ∈ ω (𝑥 = ∀𝑔𝑖(1st𝑢) ∧ 𝑦 = {𝑎 ∈ (∅ ↑m ω) ∣ ∀𝑧 ∈ ∅ ({⟨𝑖, 𝑧⟩} ∪ (𝑎 ↾ (ω ∖ {𝑖}))) ∈ (2nd𝑢)}))})), {⟨𝑥, 𝑦⟩ ∣ ∃𝑖 ∈ ω ∃𝑗 ∈ ω (𝑥 = (𝑖𝑔𝑗) ∧ 𝑦 = {𝑎 ∈ (∅ ↑m ω) ∣ (𝑎𝑖)∅(𝑎𝑗)})}) ↾ suc ω)
4 peano1 7592 . . . . . . . . . . . . . . . . . . 19 ∅ ∈ ω
54ne0ii 4306 . . . . . . . . . . . . . . . . . 18 ω ≠ ∅
6 map0b 8440 . . . . . . . . . . . . . . . . . 18 (ω ≠ ∅ → (∅ ↑m ω) = ∅)
75, 6ax-mp 5 . . . . . . . . . . . . . . . . 17 (∅ ↑m ω) = ∅
87difeq1i 4098 . . . . . . . . . . . . . . . 16 ((∅ ↑m ω) ∖ ((2nd𝑢) ∩ (2nd𝑣))) = (∅ ∖ ((2nd𝑢) ∩ (2nd𝑣)))
9 0dif 4358 . . . . . . . . . . . . . . . 16 (∅ ∖ ((2nd𝑢) ∩ (2nd𝑣))) = ∅
108, 9eqtri 2848 . . . . . . . . . . . . . . 15 ((∅ ↑m ω) ∖ ((2nd𝑢) ∩ (2nd𝑣))) = ∅
1110eqeq2i 2838 . . . . . . . . . . . . . 14 (𝑦 = ((∅ ↑m ω) ∖ ((2nd𝑢) ∩ (2nd𝑣))) ↔ 𝑦 = ∅)
1211anbi2i 622 . . . . . . . . . . . . 13 ((𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∧ 𝑦 = ((∅ ↑m ω) ∖ ((2nd𝑢) ∩ (2nd𝑣)))) ↔ (𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∧ 𝑦 = ∅))
1312rexbii 3251 . . . . . . . . . . . 12 (∃𝑣𝑓 (𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∧ 𝑦 = ((∅ ↑m ω) ∖ ((2nd𝑢) ∩ (2nd𝑣)))) ↔ ∃𝑣𝑓 (𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∧ 𝑦 = ∅))
14 r19.41v 3351 . . . . . . . . . . . 12 (∃𝑣𝑓 (𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∧ 𝑦 = ∅) ↔ (∃𝑣𝑓 𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∧ 𝑦 = ∅))
1513, 14bitri 276 . . . . . . . . . . 11 (∃𝑣𝑓 (𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∧ 𝑦 = ((∅ ↑m ω) ∖ ((2nd𝑢) ∩ (2nd𝑣)))) ↔ (∃𝑣𝑓 𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∧ 𝑦 = ∅))
167rabeqi 3487 . . . . . . . . . . . . . . . 16 {𝑎 ∈ (∅ ↑m ω) ∣ ∀𝑧 ∈ ∅ ({⟨𝑖, 𝑧⟩} ∪ (𝑎 ↾ (ω ∖ {𝑖}))) ∈ (2nd𝑢)} = {𝑎 ∈ ∅ ∣ ∀𝑧 ∈ ∅ ({⟨𝑖, 𝑧⟩} ∪ (𝑎 ↾ (ω ∖ {𝑖}))) ∈ (2nd𝑢)}
17 rab0 4340 . . . . . . . . . . . . . . . 16 {𝑎 ∈ ∅ ∣ ∀𝑧 ∈ ∅ ({⟨𝑖, 𝑧⟩} ∪ (𝑎 ↾ (ω ∖ {𝑖}))) ∈ (2nd𝑢)} = ∅
1816, 17eqtri 2848 . . . . . . . . . . . . . . 15 {𝑎 ∈ (∅ ↑m ω) ∣ ∀𝑧 ∈ ∅ ({⟨𝑖, 𝑧⟩} ∪ (𝑎 ↾ (ω ∖ {𝑖}))) ∈ (2nd𝑢)} = ∅
1918eqeq2i 2838 . . . . . . . . . . . . . 14 (𝑦 = {𝑎 ∈ (∅ ↑m ω) ∣ ∀𝑧 ∈ ∅ ({⟨𝑖, 𝑧⟩} ∪ (𝑎 ↾ (ω ∖ {𝑖}))) ∈ (2nd𝑢)} ↔ 𝑦 = ∅)
2019anbi2i 622 . . . . . . . . . . . . 13 ((𝑥 = ∀𝑔𝑖(1st𝑢) ∧ 𝑦 = {𝑎 ∈ (∅ ↑m ω) ∣ ∀𝑧 ∈ ∅ ({⟨𝑖, 𝑧⟩} ∪ (𝑎 ↾ (ω ∖ {𝑖}))) ∈ (2nd𝑢)}) ↔ (𝑥 = ∀𝑔𝑖(1st𝑢) ∧ 𝑦 = ∅))
2120rexbii 3251 . . . . . . . . . . . 12 (∃𝑖 ∈ ω (𝑥 = ∀𝑔𝑖(1st𝑢) ∧ 𝑦 = {𝑎 ∈ (∅ ↑m ω) ∣ ∀𝑧 ∈ ∅ ({⟨𝑖, 𝑧⟩} ∪ (𝑎 ↾ (ω ∖ {𝑖}))) ∈ (2nd𝑢)}) ↔ ∃𝑖 ∈ ω (𝑥 = ∀𝑔𝑖(1st𝑢) ∧ 𝑦 = ∅))
22 r19.41v 3351 . . . . . . . . . . . 12 (∃𝑖 ∈ ω (𝑥 = ∀𝑔𝑖(1st𝑢) ∧ 𝑦 = ∅) ↔ (∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st𝑢) ∧ 𝑦 = ∅))
2321, 22bitri 276 . . . . . . . . . . 11 (∃𝑖 ∈ ω (𝑥 = ∀𝑔𝑖(1st𝑢) ∧ 𝑦 = {𝑎 ∈ (∅ ↑m ω) ∣ ∀𝑧 ∈ ∅ ({⟨𝑖, 𝑧⟩} ∪ (𝑎 ↾ (ω ∖ {𝑖}))) ∈ (2nd𝑢)}) ↔ (∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st𝑢) ∧ 𝑦 = ∅))
2415, 23orbi12i 910 . . . . . . . . . 10 ((∃𝑣𝑓 (𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∧ 𝑦 = ((∅ ↑m ω) ∖ ((2nd𝑢) ∩ (2nd𝑣)))) ∨ ∃𝑖 ∈ ω (𝑥 = ∀𝑔𝑖(1st𝑢) ∧ 𝑦 = {𝑎 ∈ (∅ ↑m ω) ∣ ∀𝑧 ∈ ∅ ({⟨𝑖, 𝑧⟩} ∪ (𝑎 ↾ (ω ∖ {𝑖}))) ∈ (2nd𝑢)})) ↔ ((∃𝑣𝑓 𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∧ 𝑦 = ∅) ∨ (∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st𝑢) ∧ 𝑦 = ∅)))
2524rexbii 3251 . . . . . . . . 9 (∃𝑢𝑓 (∃𝑣𝑓 (𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∧ 𝑦 = ((∅ ↑m ω) ∖ ((2nd𝑢) ∩ (2nd𝑣)))) ∨ ∃𝑖 ∈ ω (𝑥 = ∀𝑔𝑖(1st𝑢) ∧ 𝑦 = {𝑎 ∈ (∅ ↑m ω) ∣ ∀𝑧 ∈ ∅ ({⟨𝑖, 𝑧⟩} ∪ (𝑎 ↾ (ω ∖ {𝑖}))) ∈ (2nd𝑢)})) ↔ ∃𝑢𝑓 ((∃𝑣𝑓 𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∧ 𝑦 = ∅) ∨ (∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st𝑢) ∧ 𝑦 = ∅)))
26 andir 1004 . . . . . . . . . . 11 (((∃𝑣𝑓 𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st𝑢)) ∧ 𝑦 = ∅) ↔ ((∃𝑣𝑓 𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∧ 𝑦 = ∅) ∨ (∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st𝑢) ∧ 𝑦 = ∅)))
2726bicomi 225 . . . . . . . . . 10 (((∃𝑣𝑓 𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∧ 𝑦 = ∅) ∨ (∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st𝑢) ∧ 𝑦 = ∅)) ↔ ((∃𝑣𝑓 𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st𝑢)) ∧ 𝑦 = ∅))
2827rexbii 3251 . . . . . . . . 9 (∃𝑢𝑓 ((∃𝑣𝑓 𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∧ 𝑦 = ∅) ∨ (∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st𝑢) ∧ 𝑦 = ∅)) ↔ ∃𝑢𝑓 ((∃𝑣𝑓 𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st𝑢)) ∧ 𝑦 = ∅))
29 r19.41v 3351 . . . . . . . . 9 (∃𝑢𝑓 ((∃𝑣𝑓 𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st𝑢)) ∧ 𝑦 = ∅) ↔ (∃𝑢𝑓 (∃𝑣𝑓 𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st𝑢)) ∧ 𝑦 = ∅))
3025, 28, 293bitri 298 . . . . . . . 8 (∃𝑢𝑓 (∃𝑣𝑓 (𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∧ 𝑦 = ((∅ ↑m ω) ∖ ((2nd𝑢) ∩ (2nd𝑣)))) ∨ ∃𝑖 ∈ ω (𝑥 = ∀𝑔𝑖(1st𝑢) ∧ 𝑦 = {𝑎 ∈ (∅ ↑m ω) ∣ ∀𝑧 ∈ ∅ ({⟨𝑖, 𝑧⟩} ∪ (𝑎 ↾ (ω ∖ {𝑖}))) ∈ (2nd𝑢)})) ↔ (∃𝑢𝑓 (∃𝑣𝑓 𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st𝑢)) ∧ 𝑦 = ∅))
3130biancomi 463 . . . . . . 7 (∃𝑢𝑓 (∃𝑣𝑓 (𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∧ 𝑦 = ((∅ ↑m ω) ∖ ((2nd𝑢) ∩ (2nd𝑣)))) ∨ ∃𝑖 ∈ ω (𝑥 = ∀𝑔𝑖(1st𝑢) ∧ 𝑦 = {𝑎 ∈ (∅ ↑m ω) ∣ ∀𝑧 ∈ ∅ ({⟨𝑖, 𝑧⟩} ∪ (𝑎 ↾ (ω ∖ {𝑖}))) ∈ (2nd𝑢)})) ↔ (𝑦 = ∅ ∧ ∃𝑢𝑓 (∃𝑣𝑓 𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st𝑢))))
3231opabbii 5129 . . . . . 6 {⟨𝑥, 𝑦⟩ ∣ ∃𝑢𝑓 (∃𝑣𝑓 (𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∧ 𝑦 = ((∅ ↑m ω) ∖ ((2nd𝑢) ∩ (2nd𝑣)))) ∨ ∃𝑖 ∈ ω (𝑥 = ∀𝑔𝑖(1st𝑢) ∧ 𝑦 = {𝑎 ∈ (∅ ↑m ω) ∣ ∀𝑧 ∈ ∅ ({⟨𝑖, 𝑧⟩} ∪ (𝑎 ↾ (ω ∖ {𝑖}))) ∈ (2nd𝑢)}))} = {⟨𝑥, 𝑦⟩ ∣ (𝑦 = ∅ ∧ ∃𝑢𝑓 (∃𝑣𝑓 𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st𝑢)))}
3332uneq2i 4139 . . . . 5 (𝑓 ∪ {⟨𝑥, 𝑦⟩ ∣ ∃𝑢𝑓 (∃𝑣𝑓 (𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∧ 𝑦 = ((∅ ↑m ω) ∖ ((2nd𝑢) ∩ (2nd𝑣)))) ∨ ∃𝑖 ∈ ω (𝑥 = ∀𝑔𝑖(1st𝑢) ∧ 𝑦 = {𝑎 ∈ (∅ ↑m ω) ∣ ∀𝑧 ∈ ∅ ({⟨𝑖, 𝑧⟩} ∪ (𝑎 ↾ (ω ∖ {𝑖}))) ∈ (2nd𝑢)}))}) = (𝑓 ∪ {⟨𝑥, 𝑦⟩ ∣ (𝑦 = ∅ ∧ ∃𝑢𝑓 (∃𝑣𝑓 𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st𝑢)))})
3433mpteq2i 5154 . . . 4 (𝑓 ∈ V ↦ (𝑓 ∪ {⟨𝑥, 𝑦⟩ ∣ ∃𝑢𝑓 (∃𝑣𝑓 (𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∧ 𝑦 = ((∅ ↑m ω) ∖ ((2nd𝑢) ∩ (2nd𝑣)))) ∨ ∃𝑖 ∈ ω (𝑥 = ∀𝑔𝑖(1st𝑢) ∧ 𝑦 = {𝑎 ∈ (∅ ↑m ω) ∣ ∀𝑧 ∈ ∅ ({⟨𝑖, 𝑧⟩} ∪ (𝑎 ↾ (ω ∖ {𝑖}))) ∈ (2nd𝑢)}))})) = (𝑓 ∈ V ↦ (𝑓 ∪ {⟨𝑥, 𝑦⟩ ∣ (𝑦 = ∅ ∧ ∃𝑢𝑓 (∃𝑣𝑓 𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st𝑢)))}))
357rabeqi 3487 . . . . . . . . . . 11 {𝑎 ∈ (∅ ↑m ω) ∣ (𝑎𝑖)∅(𝑎𝑗)} = {𝑎 ∈ ∅ ∣ (𝑎𝑖)∅(𝑎𝑗)}
36 rab0 4340 . . . . . . . . . . 11 {𝑎 ∈ ∅ ∣ (𝑎𝑖)∅(𝑎𝑗)} = ∅
3735, 36eqtri 2848 . . . . . . . . . 10 {𝑎 ∈ (∅ ↑m ω) ∣ (𝑎𝑖)∅(𝑎𝑗)} = ∅
3837eqeq2i 2838 . . . . . . . . 9 (𝑦 = {𝑎 ∈ (∅ ↑m ω) ∣ (𝑎𝑖)∅(𝑎𝑗)} ↔ 𝑦 = ∅)
3938anbi2i 622 . . . . . . . 8 ((𝑥 = (𝑖𝑔𝑗) ∧ 𝑦 = {𝑎 ∈ (∅ ↑m ω) ∣ (𝑎𝑖)∅(𝑎𝑗)}) ↔ (𝑥 = (𝑖𝑔𝑗) ∧ 𝑦 = ∅))
40392rexbii 3252 . . . . . . 7 (∃𝑖 ∈ ω ∃𝑗 ∈ ω (𝑥 = (𝑖𝑔𝑗) ∧ 𝑦 = {𝑎 ∈ (∅ ↑m ω) ∣ (𝑎𝑖)∅(𝑎𝑗)}) ↔ ∃𝑖 ∈ ω ∃𝑗 ∈ ω (𝑥 = (𝑖𝑔𝑗) ∧ 𝑦 = ∅))
41 r19.41vv 3353 . . . . . . 7 (∃𝑖 ∈ ω ∃𝑗 ∈ ω (𝑥 = (𝑖𝑔𝑗) ∧ 𝑦 = ∅) ↔ (∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑥 = (𝑖𝑔𝑗) ∧ 𝑦 = ∅))
4240, 41bitri 276 . . . . . 6 (∃𝑖 ∈ ω ∃𝑗 ∈ ω (𝑥 = (𝑖𝑔𝑗) ∧ 𝑦 = {𝑎 ∈ (∅ ↑m ω) ∣ (𝑎𝑖)∅(𝑎𝑗)}) ↔ (∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑥 = (𝑖𝑔𝑗) ∧ 𝑦 = ∅))
4342biancomi 463 . . . . 5 (∃𝑖 ∈ ω ∃𝑗 ∈ ω (𝑥 = (𝑖𝑔𝑗) ∧ 𝑦 = {𝑎 ∈ (∅ ↑m ω) ∣ (𝑎𝑖)∅(𝑎𝑗)}) ↔ (𝑦 = ∅ ∧ ∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑥 = (𝑖𝑔𝑗)))
4443opabbii 5129 . . . 4 {⟨𝑥, 𝑦⟩ ∣ ∃𝑖 ∈ ω ∃𝑗 ∈ ω (𝑥 = (𝑖𝑔𝑗) ∧ 𝑦 = {𝑎 ∈ (∅ ↑m ω) ∣ (𝑎𝑖)∅(𝑎𝑗)})} = {⟨𝑥, 𝑦⟩ ∣ (𝑦 = ∅ ∧ ∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑥 = (𝑖𝑔𝑗))}
45 rdgeq12 8043 . . . 4 (((𝑓 ∈ V ↦ (𝑓 ∪ {⟨𝑥, 𝑦⟩ ∣ ∃𝑢𝑓 (∃𝑣𝑓 (𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∧ 𝑦 = ((∅ ↑m ω) ∖ ((2nd𝑢) ∩ (2nd𝑣)))) ∨ ∃𝑖 ∈ ω (𝑥 = ∀𝑔𝑖(1st𝑢) ∧ 𝑦 = {𝑎 ∈ (∅ ↑m ω) ∣ ∀𝑧 ∈ ∅ ({⟨𝑖, 𝑧⟩} ∪ (𝑎 ↾ (ω ∖ {𝑖}))) ∈ (2nd𝑢)}))})) = (𝑓 ∈ V ↦ (𝑓 ∪ {⟨𝑥, 𝑦⟩ ∣ (𝑦 = ∅ ∧ ∃𝑢𝑓 (∃𝑣𝑓 𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st𝑢)))})) ∧ {⟨𝑥, 𝑦⟩ ∣ ∃𝑖 ∈ ω ∃𝑗 ∈ ω (𝑥 = (𝑖𝑔𝑗) ∧ 𝑦 = {𝑎 ∈ (∅ ↑m ω) ∣ (𝑎𝑖)∅(𝑎𝑗)})} = {⟨𝑥, 𝑦⟩ ∣ (𝑦 = ∅ ∧ ∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑥 = (𝑖𝑔𝑗))}) → rec((𝑓 ∈ V ↦ (𝑓 ∪ {⟨𝑥, 𝑦⟩ ∣ ∃𝑢𝑓 (∃𝑣𝑓 (𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∧ 𝑦 = ((∅ ↑m ω) ∖ ((2nd𝑢) ∩ (2nd𝑣)))) ∨ ∃𝑖 ∈ ω (𝑥 = ∀𝑔𝑖(1st𝑢) ∧ 𝑦 = {𝑎 ∈ (∅ ↑m ω) ∣ ∀𝑧 ∈ ∅ ({⟨𝑖, 𝑧⟩} ∪ (𝑎 ↾ (ω ∖ {𝑖}))) ∈ (2nd𝑢)}))})), {⟨𝑥, 𝑦⟩ ∣ ∃𝑖 ∈ ω ∃𝑗 ∈ ω (𝑥 = (𝑖𝑔𝑗) ∧ 𝑦 = {𝑎 ∈ (∅ ↑m ω) ∣ (𝑎𝑖)∅(𝑎𝑗)})}) = rec((𝑓 ∈ V ↦ (𝑓 ∪ {⟨𝑥, 𝑦⟩ ∣ (𝑦 = ∅ ∧ ∃𝑢𝑓 (∃𝑣𝑓 𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st𝑢)))})), {⟨𝑥, 𝑦⟩ ∣ (𝑦 = ∅ ∧ ∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑥 = (𝑖𝑔𝑗))}))
4634, 44, 45mp2an 688 . . 3 rec((𝑓 ∈ V ↦ (𝑓 ∪ {⟨𝑥, 𝑦⟩ ∣ ∃𝑢𝑓 (∃𝑣𝑓 (𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∧ 𝑦 = ((∅ ↑m ω) ∖ ((2nd𝑢) ∩ (2nd𝑣)))) ∨ ∃𝑖 ∈ ω (𝑥 = ∀𝑔𝑖(1st𝑢) ∧ 𝑦 = {𝑎 ∈ (∅ ↑m ω) ∣ ∀𝑧 ∈ ∅ ({⟨𝑖, 𝑧⟩} ∪ (𝑎 ↾ (ω ∖ {𝑖}))) ∈ (2nd𝑢)}))})), {⟨𝑥, 𝑦⟩ ∣ ∃𝑖 ∈ ω ∃𝑗 ∈ ω (𝑥 = (𝑖𝑔𝑗) ∧ 𝑦 = {𝑎 ∈ (∅ ↑m ω) ∣ (𝑎𝑖)∅(𝑎𝑗)})}) = rec((𝑓 ∈ V ↦ (𝑓 ∪ {⟨𝑥, 𝑦⟩ ∣ (𝑦 = ∅ ∧ ∃𝑢𝑓 (∃𝑣𝑓 𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st𝑢)))})), {⟨𝑥, 𝑦⟩ ∣ (𝑦 = ∅ ∧ ∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑥 = (𝑖𝑔𝑗))})
4746reseq1i 5847 . 2 (rec((𝑓 ∈ V ↦ (𝑓 ∪ {⟨𝑥, 𝑦⟩ ∣ ∃𝑢𝑓 (∃𝑣𝑓 (𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∧ 𝑦 = ((∅ ↑m ω) ∖ ((2nd𝑢) ∩ (2nd𝑣)))) ∨ ∃𝑖 ∈ ω (𝑥 = ∀𝑔𝑖(1st𝑢) ∧ 𝑦 = {𝑎 ∈ (∅ ↑m ω) ∣ ∀𝑧 ∈ ∅ ({⟨𝑖, 𝑧⟩} ∪ (𝑎 ↾ (ω ∖ {𝑖}))) ∈ (2nd𝑢)}))})), {⟨𝑥, 𝑦⟩ ∣ ∃𝑖 ∈ ω ∃𝑗 ∈ ω (𝑥 = (𝑖𝑔𝑗) ∧ 𝑦 = {𝑎 ∈ (∅ ↑m ω) ∣ (𝑎𝑖)∅(𝑎𝑗)})}) ↾ suc ω) = (rec((𝑓 ∈ V ↦ (𝑓 ∪ {⟨𝑥, 𝑦⟩ ∣ (𝑦 = ∅ ∧ ∃𝑢𝑓 (∃𝑣𝑓 𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st𝑢)))})), {⟨𝑥, 𝑦⟩ ∣ (𝑦 = ∅ ∧ ∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑥 = (𝑖𝑔𝑗))}) ↾ suc ω)
483, 47eqtri 2848 1 (∅ Sat ∅) = (rec((𝑓 ∈ V ↦ (𝑓 ∪ {⟨𝑥, 𝑦⟩ ∣ (𝑦 = ∅ ∧ ∃𝑢𝑓 (∃𝑣𝑓 𝑥 = ((1st𝑢)⊼𝑔(1st𝑣)) ∨ ∃𝑖 ∈ ω 𝑥 = ∀𝑔𝑖(1st𝑢)))})), {⟨𝑥, 𝑦⟩ ∣ (𝑦 = ∅ ∧ ∃𝑖 ∈ ω ∃𝑗 ∈ ω 𝑥 = (𝑖𝑔𝑗))}) ↾ suc ω)
Colors of variables: wff setvar class
Syntax hints:  wa 396  wo 843   = wceq 1530  wcel 2107  wne 3020  wral 3142  wrex 3143  {crab 3146  Vcvv 3499  cdif 3936  cun 3937  cin 3938  c0 4294  {csn 4563  cop 4569   class class class wbr 5062  {copab 5124  cmpt 5142  cres 5555  suc csuc 6190  cfv 6351  (class class class)co 7151  ωcom 7571  1st c1st 7681  2nd c2nd 7682  reccrdg 8039  m cmap 8399  𝑔cgoe 32466  𝑔cgna 32467  𝑔cgol 32468   Sat csat 32469
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1789  ax-4 1803  ax-5 1904  ax-6 1963  ax-7 2008  ax-8 2109  ax-9 2117  ax-10 2138  ax-11 2153  ax-12 2169  ax-ext 2797  ax-rep 5186  ax-sep 5199  ax-nul 5206  ax-pow 5262  ax-pr 5325  ax-un 7454  ax-inf2 9096
This theorem depends on definitions:  df-bi 208  df-an 397  df-or 844  df-3or 1082  df-3an 1083  df-tru 1533  df-ex 1774  df-nf 1778  df-sb 2063  df-mo 2619  df-eu 2651  df-clab 2804  df-cleq 2818  df-clel 2897  df-nfc 2967  df-ne 3021  df-ral 3147  df-rex 3148  df-reu 3149  df-rab 3151  df-v 3501  df-sbc 3776  df-csb 3887  df-dif 3942  df-un 3944  df-in 3946  df-ss 3955  df-pss 3957  df-nul 4295  df-if 4470  df-pw 4543  df-sn 4564  df-pr 4566  df-tp 4568  df-op 4570  df-uni 4837  df-iun 4918  df-br 5063  df-opab 5125  df-mpt 5143  df-tr 5169  df-id 5458  df-eprel 5463  df-po 5472  df-so 5473  df-fr 5512  df-we 5514  df-xp 5559  df-rel 5560  df-cnv 5561  df-co 5562  df-dm 5563  df-rn 5564  df-res 5565  df-ima 5566  df-pred 6145  df-ord 6191  df-on 6192  df-lim 6193  df-suc 6194  df-iota 6311  df-fun 6353  df-fn 6354  df-f 6355  df-f1 6356  df-fo 6357  df-f1o 6358  df-fv 6359  df-ov 7154  df-oprab 7155  df-mpo 7156  df-om 7572  df-1st 7683  df-2nd 7684  df-wrecs 7941  df-recs 8002  df-rdg 8040  df-map 8401  df-sat 32476
This theorem is referenced by:  satf0sucom  32506
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