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Theorem tfisi 7567
 Description: A transfinite induction scheme in "implicit" form where the induction is done on an object derived from the object of interest. (Contributed by Stefan O'Rear, 24-Aug-2015.)
Hypotheses
Ref Expression
tfisi.a (𝜑𝐴𝑉)
tfisi.b (𝜑𝑇 ∈ On)
tfisi.c ((𝜑 ∧ (𝑅 ∈ On ∧ 𝑅𝑇) ∧ ∀𝑦(𝑆𝑅𝜒)) → 𝜓)
tfisi.d (𝑥 = 𝑦 → (𝜓𝜒))
tfisi.e (𝑥 = 𝐴 → (𝜓𝜃))
tfisi.f (𝑥 = 𝑦𝑅 = 𝑆)
tfisi.g (𝑥 = 𝐴𝑅 = 𝑇)
Assertion
Ref Expression
tfisi (𝜑𝜃)
Distinct variable groups:   𝑥,𝑦,𝑇   𝑦,𝑅   𝑥,𝑆   𝜒,𝑥   𝜑,𝑥,𝑦   𝜓,𝑦   𝑥,𝐴   𝜃,𝑥
Allowed substitution hints:   𝜓(𝑥)   𝜒(𝑦)   𝜃(𝑦)   𝐴(𝑦)   𝑅(𝑥)   𝑆(𝑦)   𝑉(𝑥,𝑦)

Proof of Theorem tfisi
Dummy variables 𝑣 𝑤 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 ssid 3975 . 2 𝑇𝑇
2 eqid 2824 . . . . 5 𝑇 = 𝑇
3 tfisi.a . . . . . 6 (𝜑𝐴𝑉)
4 tfisi.b . . . . . . 7 (𝜑𝑇 ∈ On)
5 eqeq2 2836 . . . . . . . . . . 11 (𝑧 = 𝑤 → (𝑅 = 𝑧𝑅 = 𝑤))
6 sseq1 3978 . . . . . . . . . . . . 13 (𝑧 = 𝑤 → (𝑧𝑇𝑤𝑇))
76anbi2d 631 . . . . . . . . . . . 12 (𝑧 = 𝑤 → ((𝜑𝑧𝑇) ↔ (𝜑𝑤𝑇)))
87imbi1d 345 . . . . . . . . . . 11 (𝑧 = 𝑤 → (((𝜑𝑧𝑇) → 𝜓) ↔ ((𝜑𝑤𝑇) → 𝜓)))
95, 8imbi12d 348 . . . . . . . . . 10 (𝑧 = 𝑤 → ((𝑅 = 𝑧 → ((𝜑𝑧𝑇) → 𝜓)) ↔ (𝑅 = 𝑤 → ((𝜑𝑤𝑇) → 𝜓))))
109albidv 1922 . . . . . . . . 9 (𝑧 = 𝑤 → (∀𝑥(𝑅 = 𝑧 → ((𝜑𝑧𝑇) → 𝜓)) ↔ ∀𝑥(𝑅 = 𝑤 → ((𝜑𝑤𝑇) → 𝜓))))
11 tfisi.f . . . . . . . . . . . 12 (𝑥 = 𝑦𝑅 = 𝑆)
1211eqeq1d 2826 . . . . . . . . . . 11 (𝑥 = 𝑦 → (𝑅 = 𝑤𝑆 = 𝑤))
13 tfisi.d . . . . . . . . . . . 12 (𝑥 = 𝑦 → (𝜓𝜒))
1413imbi2d 344 . . . . . . . . . . 11 (𝑥 = 𝑦 → (((𝜑𝑤𝑇) → 𝜓) ↔ ((𝜑𝑤𝑇) → 𝜒)))
1512, 14imbi12d 348 . . . . . . . . . 10 (𝑥 = 𝑦 → ((𝑅 = 𝑤 → ((𝜑𝑤𝑇) → 𝜓)) ↔ (𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒))))
1615cbvalvw 2044 . . . . . . . . 9 (∀𝑥(𝑅 = 𝑤 → ((𝜑𝑤𝑇) → 𝜓)) ↔ ∀𝑦(𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒)))
1710, 16syl6bb 290 . . . . . . . 8 (𝑧 = 𝑤 → (∀𝑥(𝑅 = 𝑧 → ((𝜑𝑧𝑇) → 𝜓)) ↔ ∀𝑦(𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒))))
18 eqeq2 2836 . . . . . . . . . 10 (𝑧 = 𝑇 → (𝑅 = 𝑧𝑅 = 𝑇))
19 sseq1 3978 . . . . . . . . . . . 12 (𝑧 = 𝑇 → (𝑧𝑇𝑇𝑇))
2019anbi2d 631 . . . . . . . . . . 11 (𝑧 = 𝑇 → ((𝜑𝑧𝑇) ↔ (𝜑𝑇𝑇)))
2120imbi1d 345 . . . . . . . . . 10 (𝑧 = 𝑇 → (((𝜑𝑧𝑇) → 𝜓) ↔ ((𝜑𝑇𝑇) → 𝜓)))
2218, 21imbi12d 348 . . . . . . . . 9 (𝑧 = 𝑇 → ((𝑅 = 𝑧 → ((𝜑𝑧𝑇) → 𝜓)) ↔ (𝑅 = 𝑇 → ((𝜑𝑇𝑇) → 𝜓))))
2322albidv 1922 . . . . . . . 8 (𝑧 = 𝑇 → (∀𝑥(𝑅 = 𝑧 → ((𝜑𝑧𝑇) → 𝜓)) ↔ ∀𝑥(𝑅 = 𝑇 → ((𝜑𝑇𝑇) → 𝜓))))
24 simp3l 1198 . . . . . . . . . . . 12 (((𝑧 ∈ On ∧ ∀𝑤𝑧𝑦(𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒))) ∧ 𝑅 = 𝑧 ∧ (𝜑𝑧𝑇)) → 𝜑)
25 simp2 1134 . . . . . . . . . . . . 13 (((𝑧 ∈ On ∧ ∀𝑤𝑧𝑦(𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒))) ∧ 𝑅 = 𝑧 ∧ (𝜑𝑧𝑇)) → 𝑅 = 𝑧)
26 simp1l 1194 . . . . . . . . . . . . 13 (((𝑧 ∈ On ∧ ∀𝑤𝑧𝑦(𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒))) ∧ 𝑅 = 𝑧 ∧ (𝜑𝑧𝑇)) → 𝑧 ∈ On)
2725, 26eqeltrd 2916 . . . . . . . . . . . 12 (((𝑧 ∈ On ∧ ∀𝑤𝑧𝑦(𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒))) ∧ 𝑅 = 𝑧 ∧ (𝜑𝑧𝑇)) → 𝑅 ∈ On)
28 simp3r 1199 . . . . . . . . . . . . 13 (((𝑧 ∈ On ∧ ∀𝑤𝑧𝑦(𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒))) ∧ 𝑅 = 𝑧 ∧ (𝜑𝑧𝑇)) → 𝑧𝑇)
2925, 28eqsstrd 3991 . . . . . . . . . . . 12 (((𝑧 ∈ On ∧ ∀𝑤𝑧𝑦(𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒))) ∧ 𝑅 = 𝑧 ∧ (𝜑𝑧𝑇)) → 𝑅𝑇)
30 simpl3l 1225 . . . . . . . . . . . . . . . 16 ((((𝑧 ∈ On ∧ ∀𝑤𝑧𝑦(𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒))) ∧ 𝑅 = 𝑧 ∧ (𝜑𝑧𝑇)) ∧ 𝑣 / 𝑥𝑅𝑅) → 𝜑)
31 simpl1l 1221 . . . . . . . . . . . . . . . . . 18 ((((𝑧 ∈ On ∧ ∀𝑤𝑧𝑦(𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒))) ∧ 𝑅 = 𝑧 ∧ (𝜑𝑧𝑇)) ∧ 𝑣 / 𝑥𝑅𝑅) → 𝑧 ∈ On)
32 simpr 488 . . . . . . . . . . . . . . . . . . 19 ((((𝑧 ∈ On ∧ ∀𝑤𝑧𝑦(𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒))) ∧ 𝑅 = 𝑧 ∧ (𝜑𝑧𝑇)) ∧ 𝑣 / 𝑥𝑅𝑅) → 𝑣 / 𝑥𝑅𝑅)
33 simpl2 1189 . . . . . . . . . . . . . . . . . . 19 ((((𝑧 ∈ On ∧ ∀𝑤𝑧𝑦(𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒))) ∧ 𝑅 = 𝑧 ∧ (𝜑𝑧𝑇)) ∧ 𝑣 / 𝑥𝑅𝑅) → 𝑅 = 𝑧)
3432, 33eleqtrd 2918 . . . . . . . . . . . . . . . . . 18 ((((𝑧 ∈ On ∧ ∀𝑤𝑧𝑦(𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒))) ∧ 𝑅 = 𝑧 ∧ (𝜑𝑧𝑇)) ∧ 𝑣 / 𝑥𝑅𝑅) → 𝑣 / 𝑥𝑅𝑧)
35 onelss 6220 . . . . . . . . . . . . . . . . . 18 (𝑧 ∈ On → (𝑣 / 𝑥𝑅𝑧𝑣 / 𝑥𝑅𝑧))
3631, 34, 35sylc 65 . . . . . . . . . . . . . . . . 17 ((((𝑧 ∈ On ∧ ∀𝑤𝑧𝑦(𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒))) ∧ 𝑅 = 𝑧 ∧ (𝜑𝑧𝑇)) ∧ 𝑣 / 𝑥𝑅𝑅) → 𝑣 / 𝑥𝑅𝑧)
37 simpl3r 1226 . . . . . . . . . . . . . . . . 17 ((((𝑧 ∈ On ∧ ∀𝑤𝑧𝑦(𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒))) ∧ 𝑅 = 𝑧 ∧ (𝜑𝑧𝑇)) ∧ 𝑣 / 𝑥𝑅𝑅) → 𝑧𝑇)
3836, 37sstrd 3963 . . . . . . . . . . . . . . . 16 ((((𝑧 ∈ On ∧ ∀𝑤𝑧𝑦(𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒))) ∧ 𝑅 = 𝑧 ∧ (𝜑𝑧𝑇)) ∧ 𝑣 / 𝑥𝑅𝑅) → 𝑣 / 𝑥𝑅𝑇)
39 eqeq2 2836 . . . . . . . . . . . . . . . . . . . 20 (𝑤 = 𝑣 / 𝑥𝑅 → (𝑆 = 𝑤𝑆 = 𝑣 / 𝑥𝑅))
40 sseq1 3978 . . . . . . . . . . . . . . . . . . . . . 22 (𝑤 = 𝑣 / 𝑥𝑅 → (𝑤𝑇𝑣 / 𝑥𝑅𝑇))
4140anbi2d 631 . . . . . . . . . . . . . . . . . . . . 21 (𝑤 = 𝑣 / 𝑥𝑅 → ((𝜑𝑤𝑇) ↔ (𝜑𝑣 / 𝑥𝑅𝑇)))
4241imbi1d 345 . . . . . . . . . . . . . . . . . . . 20 (𝑤 = 𝑣 / 𝑥𝑅 → (((𝜑𝑤𝑇) → 𝜒) ↔ ((𝜑𝑣 / 𝑥𝑅𝑇) → 𝜒)))
4339, 42imbi12d 348 . . . . . . . . . . . . . . . . . . 19 (𝑤 = 𝑣 / 𝑥𝑅 → ((𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒)) ↔ (𝑆 = 𝑣 / 𝑥𝑅 → ((𝜑𝑣 / 𝑥𝑅𝑇) → 𝜒))))
4443albidv 1922 . . . . . . . . . . . . . . . . . 18 (𝑤 = 𝑣 / 𝑥𝑅 → (∀𝑦(𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒)) ↔ ∀𝑦(𝑆 = 𝑣 / 𝑥𝑅 → ((𝜑𝑣 / 𝑥𝑅𝑇) → 𝜒))))
45 simpl1r 1222 . . . . . . . . . . . . . . . . . 18 ((((𝑧 ∈ On ∧ ∀𝑤𝑧𝑦(𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒))) ∧ 𝑅 = 𝑧 ∧ (𝜑𝑧𝑇)) ∧ 𝑣 / 𝑥𝑅𝑅) → ∀𝑤𝑧𝑦(𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒)))
4644, 45, 34rspcdva 3611 . . . . . . . . . . . . . . . . 17 ((((𝑧 ∈ On ∧ ∀𝑤𝑧𝑦(𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒))) ∧ 𝑅 = 𝑧 ∧ (𝜑𝑧𝑇)) ∧ 𝑣 / 𝑥𝑅𝑅) → ∀𝑦(𝑆 = 𝑣 / 𝑥𝑅 → ((𝜑𝑣 / 𝑥𝑅𝑇) → 𝜒)))
47 eqidd 2825 . . . . . . . . . . . . . . . . 17 ((((𝑧 ∈ On ∧ ∀𝑤𝑧𝑦(𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒))) ∧ 𝑅 = 𝑧 ∧ (𝜑𝑧𝑇)) ∧ 𝑣 / 𝑥𝑅𝑅) → 𝑣 / 𝑥𝑅 = 𝑣 / 𝑥𝑅)
48 nfcv 2982 . . . . . . . . . . . . . . . . . . . . . . 23 𝑥𝑦
49 nfcv 2982 . . . . . . . . . . . . . . . . . . . . . . 23 𝑥𝑆
5048, 49, 11csbhypf 3894 . . . . . . . . . . . . . . . . . . . . . 22 (𝑣 = 𝑦𝑣 / 𝑥𝑅 = 𝑆)
5150eqcomd 2830 . . . . . . . . . . . . . . . . . . . . 21 (𝑣 = 𝑦𝑆 = 𝑣 / 𝑥𝑅)
5251equcoms 2028 . . . . . . . . . . . . . . . . . . . 20 (𝑦 = 𝑣𝑆 = 𝑣 / 𝑥𝑅)
5352eqeq1d 2826 . . . . . . . . . . . . . . . . . . 19 (𝑦 = 𝑣 → (𝑆 = 𝑣 / 𝑥𝑅𝑣 / 𝑥𝑅 = 𝑣 / 𝑥𝑅))
54 nfv 1916 . . . . . . . . . . . . . . . . . . . . . . 23 𝑥𝜒
5554, 13sbhypf 3538 . . . . . . . . . . . . . . . . . . . . . 22 (𝑣 = 𝑦 → ([𝑣 / 𝑥]𝜓𝜒))
5655bicomd 226 . . . . . . . . . . . . . . . . . . . . 21 (𝑣 = 𝑦 → (𝜒 ↔ [𝑣 / 𝑥]𝜓))
5756equcoms 2028 . . . . . . . . . . . . . . . . . . . 20 (𝑦 = 𝑣 → (𝜒 ↔ [𝑣 / 𝑥]𝜓))
5857imbi2d 344 . . . . . . . . . . . . . . . . . . 19 (𝑦 = 𝑣 → (((𝜑𝑣 / 𝑥𝑅𝑇) → 𝜒) ↔ ((𝜑𝑣 / 𝑥𝑅𝑇) → [𝑣 / 𝑥]𝜓)))
5953, 58imbi12d 348 . . . . . . . . . . . . . . . . . 18 (𝑦 = 𝑣 → ((𝑆 = 𝑣 / 𝑥𝑅 → ((𝜑𝑣 / 𝑥𝑅𝑇) → 𝜒)) ↔ (𝑣 / 𝑥𝑅 = 𝑣 / 𝑥𝑅 → ((𝜑𝑣 / 𝑥𝑅𝑇) → [𝑣 / 𝑥]𝜓))))
6059spvv 2004 . . . . . . . . . . . . . . . . 17 (∀𝑦(𝑆 = 𝑣 / 𝑥𝑅 → ((𝜑𝑣 / 𝑥𝑅𝑇) → 𝜒)) → (𝑣 / 𝑥𝑅 = 𝑣 / 𝑥𝑅 → ((𝜑𝑣 / 𝑥𝑅𝑇) → [𝑣 / 𝑥]𝜓)))
6146, 47, 60sylc 65 . . . . . . . . . . . . . . . 16 ((((𝑧 ∈ On ∧ ∀𝑤𝑧𝑦(𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒))) ∧ 𝑅 = 𝑧 ∧ (𝜑𝑧𝑇)) ∧ 𝑣 / 𝑥𝑅𝑅) → ((𝜑𝑣 / 𝑥𝑅𝑇) → [𝑣 / 𝑥]𝜓))
6230, 38, 61mp2and 698 . . . . . . . . . . . . . . 15 ((((𝑧 ∈ On ∧ ∀𝑤𝑧𝑦(𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒))) ∧ 𝑅 = 𝑧 ∧ (𝜑𝑧𝑇)) ∧ 𝑣 / 𝑥𝑅𝑅) → [𝑣 / 𝑥]𝜓)
6362ex 416 . . . . . . . . . . . . . 14 (((𝑧 ∈ On ∧ ∀𝑤𝑧𝑦(𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒))) ∧ 𝑅 = 𝑧 ∧ (𝜑𝑧𝑇)) → (𝑣 / 𝑥𝑅𝑅 → [𝑣 / 𝑥]𝜓))
6463alrimiv 1929 . . . . . . . . . . . . 13 (((𝑧 ∈ On ∧ ∀𝑤𝑧𝑦(𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒))) ∧ 𝑅 = 𝑧 ∧ (𝜑𝑧𝑇)) → ∀𝑣(𝑣 / 𝑥𝑅𝑅 → [𝑣 / 𝑥]𝜓))
6550eleq1d 2900 . . . . . . . . . . . . . . 15 (𝑣 = 𝑦 → (𝑣 / 𝑥𝑅𝑅𝑆𝑅))
6665, 55imbi12d 348 . . . . . . . . . . . . . 14 (𝑣 = 𝑦 → ((𝑣 / 𝑥𝑅𝑅 → [𝑣 / 𝑥]𝜓) ↔ (𝑆𝑅𝜒)))
6766cbvalvw 2044 . . . . . . . . . . . . 13 (∀𝑣(𝑣 / 𝑥𝑅𝑅 → [𝑣 / 𝑥]𝜓) ↔ ∀𝑦(𝑆𝑅𝜒))
6864, 67sylib 221 . . . . . . . . . . . 12 (((𝑧 ∈ On ∧ ∀𝑤𝑧𝑦(𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒))) ∧ 𝑅 = 𝑧 ∧ (𝜑𝑧𝑇)) → ∀𝑦(𝑆𝑅𝜒))
69 tfisi.c . . . . . . . . . . . 12 ((𝜑 ∧ (𝑅 ∈ On ∧ 𝑅𝑇) ∧ ∀𝑦(𝑆𝑅𝜒)) → 𝜓)
7024, 27, 29, 68, 69syl121anc 1372 . . . . . . . . . . 11 (((𝑧 ∈ On ∧ ∀𝑤𝑧𝑦(𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒))) ∧ 𝑅 = 𝑧 ∧ (𝜑𝑧𝑇)) → 𝜓)
71703exp 1116 . . . . . . . . . 10 ((𝑧 ∈ On ∧ ∀𝑤𝑧𝑦(𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒))) → (𝑅 = 𝑧 → ((𝜑𝑧𝑇) → 𝜓)))
7271alrimiv 1929 . . . . . . . . 9 ((𝑧 ∈ On ∧ ∀𝑤𝑧𝑦(𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒))) → ∀𝑥(𝑅 = 𝑧 → ((𝜑𝑧𝑇) → 𝜓)))
7372ex 416 . . . . . . . 8 (𝑧 ∈ On → (∀𝑤𝑧𝑦(𝑆 = 𝑤 → ((𝜑𝑤𝑇) → 𝜒)) → ∀𝑥(𝑅 = 𝑧 → ((𝜑𝑧𝑇) → 𝜓))))
7417, 23, 73tfis3 7566 . . . . . . 7 (𝑇 ∈ On → ∀𝑥(𝑅 = 𝑇 → ((𝜑𝑇𝑇) → 𝜓)))
754, 74syl 17 . . . . . 6 (𝜑 → ∀𝑥(𝑅 = 𝑇 → ((𝜑𝑇𝑇) → 𝜓)))
76 tfisi.g . . . . . . . . 9 (𝑥 = 𝐴𝑅 = 𝑇)
7776eqeq1d 2826 . . . . . . . 8 (𝑥 = 𝐴 → (𝑅 = 𝑇𝑇 = 𝑇))
78 tfisi.e . . . . . . . . 9 (𝑥 = 𝐴 → (𝜓𝜃))
7978imbi2d 344 . . . . . . . 8 (𝑥 = 𝐴 → (((𝜑𝑇𝑇) → 𝜓) ↔ ((𝜑𝑇𝑇) → 𝜃)))
8077, 79imbi12d 348 . . . . . . 7 (𝑥 = 𝐴 → ((𝑅 = 𝑇 → ((𝜑𝑇𝑇) → 𝜓)) ↔ (𝑇 = 𝑇 → ((𝜑𝑇𝑇) → 𝜃))))
8180spcgv 3581 . . . . . 6 (𝐴𝑉 → (∀𝑥(𝑅 = 𝑇 → ((𝜑𝑇𝑇) → 𝜓)) → (𝑇 = 𝑇 → ((𝜑𝑇𝑇) → 𝜃))))
823, 75, 81sylc 65 . . . . 5 (𝜑 → (𝑇 = 𝑇 → ((𝜑𝑇𝑇) → 𝜃)))
832, 82mpi 20 . . . 4 (𝜑 → ((𝜑𝑇𝑇) → 𝜃))
8483expd 419 . . 3 (𝜑 → (𝜑 → (𝑇𝑇𝜃)))
8584pm2.43i 52 . 2 (𝜑 → (𝑇𝑇𝜃))
861, 85mpi 20 1 (𝜑𝜃)
 Colors of variables: wff setvar class Syntax hints:   → wi 4   ↔ wb 209   ∧ wa 399   ∧ w3a 1084  ∀wal 1536   = wceq 1538  [wsb 2070   ∈ wcel 2115  ∀wral 3133  ⦋csb 3866   ⊆ wss 3919  Oncon0 6178 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 1971  ax-7 2016  ax-8 2117  ax-9 2125  ax-10 2146  ax-11 2162  ax-12 2179  ax-ext 2796  ax-sep 5189  ax-nul 5196  ax-pr 5317  ax-un 7455 This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3or 1085  df-3an 1086  df-tru 1541  df-ex 1782  df-nf 1786  df-sb 2071  df-mo 2624  df-eu 2655  df-clab 2803  df-cleq 2817  df-clel 2896  df-nfc 2964  df-ne 3015  df-ral 3138  df-rex 3139  df-rab 3142  df-v 3482  df-sbc 3759  df-csb 3867  df-dif 3922  df-un 3924  df-in 3926  df-ss 3936  df-pss 3938  df-nul 4277  df-if 4451  df-sn 4551  df-pr 4553  df-tp 4555  df-op 4557  df-uni 4825  df-br 5053  df-opab 5115  df-tr 5159  df-eprel 5452  df-po 5461  df-so 5462  df-fr 5501  df-we 5503  df-ord 6181  df-on 6182 This theorem is referenced by:  indcardi  9465
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