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Theorem truniALTVD 43639
Description: The union of a class of transitive sets is transitive. The following User's Proof is a Virtual Deduction proof completed automatically by the tools program completeusersproof.cmd, which invokes Mel L. O'Cat's mmj2 and Norm Megill's Metamath Proof Assistant. truniALT 43302 is truniALTVD 43639 without virtual deductions and was automatically derived from truniALTVD 43639.
1:: (   𝑥𝐴Tr 𝑥   ▶   𝑥𝐴 Tr 𝑥   )
2:: (   𝑥𝐴Tr 𝑥   ,   (𝑧𝑦 𝑦 𝐴)   ▶   (𝑧𝑦𝑦 𝐴)   )
3:2: (   𝑥𝐴Tr 𝑥   ,   (𝑧𝑦 𝑦 𝐴)   ▶   𝑧𝑦   )
4:2: (   𝑥𝐴Tr 𝑥   ,   (𝑧𝑦 𝑦 𝐴)   ▶   𝑦 𝐴   )
5:4: (   𝑥𝐴Tr 𝑥   ,   (𝑧𝑦 𝑦 𝐴)   ▶   𝑞(𝑦𝑞𝑞𝐴)   )
6:: (   𝑥𝐴Tr 𝑥   ,   (𝑧𝑦 𝑦 𝐴), (𝑦𝑞𝑞𝐴)   ▶   (𝑦𝑞𝑞𝐴)   )
7:6: (   𝑥𝐴Tr 𝑥   ,   (𝑧𝑦 𝑦 𝐴), (𝑦𝑞𝑞𝐴)   ▶   𝑦𝑞   )
8:6: (   𝑥𝐴Tr 𝑥   ,   (𝑧𝑦 𝑦 𝐴), (𝑦𝑞𝑞𝐴)   ▶   𝑞𝐴   )
9:1,8: (   𝑥𝐴Tr 𝑥   ,   (𝑧𝑦 𝑦 𝐴), (𝑦𝑞𝑞𝐴)   ▶   [𝑞 / 𝑥]Tr 𝑥   )
10:8,9: (   𝑥𝐴Tr 𝑥   ,   (𝑧𝑦 𝑦 𝐴), (𝑦𝑞𝑞𝐴)   ▶   Tr 𝑞   )
11:3,7,10: (   𝑥𝐴Tr 𝑥   ,   (𝑧𝑦 𝑦 𝐴), (𝑦𝑞𝑞𝐴)   ▶   𝑧𝑞   )
12:11,8: (   𝑥𝐴Tr 𝑥   ,   (𝑧𝑦 𝑦 𝐴), (𝑦𝑞𝑞𝐴)   ▶   𝑧 𝐴   )
13:12: (   𝑥𝐴Tr 𝑥   ,   (𝑧𝑦 𝑦 𝐴)   ▶   ((𝑦𝑞𝑞𝐴) → 𝑧 𝐴)   )
14:13: (   𝑥𝐴Tr 𝑥   ,   (𝑧𝑦 𝑦 𝐴)   ▶   𝑞((𝑦𝑞𝑞𝐴) → 𝑧 𝐴)   )
15:14: (   𝑥𝐴Tr 𝑥   ,   (𝑧𝑦 𝑦 𝐴)   ▶   (∃𝑞(𝑦𝑞𝑞𝐴) → 𝑧 𝐴)   )
16:5,15: (   𝑥𝐴Tr 𝑥   ,   (𝑧𝑦 𝑦 𝐴)   ▶   𝑧 𝐴   )
17:16: (   𝑥𝐴Tr 𝑥   ▶   ((𝑧𝑦 𝑦 𝐴) → 𝑧 𝐴)   )
18:17: (   𝑥𝐴Tr 𝑥    ▶   𝑧𝑦((𝑧𝑦𝑦 𝐴) → 𝑧 𝐴)   )
19:18: (   𝑥𝐴Tr 𝑥   ▶   Tr 𝐴   )
qed:19: (∀𝑥𝐴Tr 𝑥 → Tr 𝐴)
(Contributed by Alan Sare, 18-Mar-2012.) (Proof modification is discouraged.) (New usage is discouraged.)
Assertion
Ref Expression
truniALTVD (∀𝑥𝐴 Tr 𝑥 → Tr 𝐴)
Distinct variable group:   𝑥,𝐴

Proof of Theorem truniALTVD
Dummy variables 𝑞 𝑦 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 idn2 43374 . . . . . . . 8 (   𝑥𝐴 Tr 𝑥   ,   (𝑧𝑦𝑦 𝐴)   ▶   (𝑧𝑦𝑦 𝐴)   )
2 simpr 486 . . . . . . . 8 ((𝑧𝑦𝑦 𝐴) → 𝑦 𝐴)
31, 2e2 43392 . . . . . . 7 (   𝑥𝐴 Tr 𝑥   ,   (𝑧𝑦𝑦 𝐴)   ▶   𝑦 𝐴   )
4 eluni 4912 . . . . . . . 8 (𝑦 𝐴 ↔ ∃𝑞(𝑦𝑞𝑞𝐴))
54biimpi 215 . . . . . . 7 (𝑦 𝐴 → ∃𝑞(𝑦𝑞𝑞𝐴))
63, 5e2 43392 . . . . . 6 (   𝑥𝐴 Tr 𝑥   ,   (𝑧𝑦𝑦 𝐴)   ▶   𝑞(𝑦𝑞𝑞𝐴)   )
7 simpl 484 . . . . . . . . . . . 12 ((𝑧𝑦𝑦 𝐴) → 𝑧𝑦)
81, 7e2 43392 . . . . . . . . . . 11 (   𝑥𝐴 Tr 𝑥   ,   (𝑧𝑦𝑦 𝐴)   ▶   𝑧𝑦   )
9 idn3 43376 . . . . . . . . . . . 12 (   𝑥𝐴 Tr 𝑥   ,   (𝑧𝑦𝑦 𝐴)   ,   (𝑦𝑞𝑞𝐴)   ▶   (𝑦𝑞𝑞𝐴)   )
10 simpl 484 . . . . . . . . . . . 12 ((𝑦𝑞𝑞𝐴) → 𝑦𝑞)
119, 10e3 43498 . . . . . . . . . . 11 (   𝑥𝐴 Tr 𝑥   ,   (𝑧𝑦𝑦 𝐴)   ,   (𝑦𝑞𝑞𝐴)   ▶   𝑦𝑞   )
12 simpr 486 . . . . . . . . . . . . 13 ((𝑦𝑞𝑞𝐴) → 𝑞𝐴)
139, 12e3 43498 . . . . . . . . . . . 12 (   𝑥𝐴 Tr 𝑥   ,   (𝑧𝑦𝑦 𝐴)   ,   (𝑦𝑞𝑞𝐴)   ▶   𝑞𝐴   )
14 idn1 43335 . . . . . . . . . . . . 13 (   𝑥𝐴 Tr 𝑥   ▶   𝑥𝐴 Tr 𝑥   )
15 rspsbc 3874 . . . . . . . . . . . . . 14 (𝑞𝐴 → (∀𝑥𝐴 Tr 𝑥[𝑞 / 𝑥]Tr 𝑥))
1615com12 32 . . . . . . . . . . . . 13 (∀𝑥𝐴 Tr 𝑥 → (𝑞𝐴[𝑞 / 𝑥]Tr 𝑥))
1714, 13, 16e13 43509 . . . . . . . . . . . 12 (   𝑥𝐴 Tr 𝑥   ,   (𝑧𝑦𝑦 𝐴)   ,   (𝑦𝑞𝑞𝐴)   ▶   [𝑞 / 𝑥]Tr 𝑥   )
18 trsbc 43301 . . . . . . . . . . . . 13 (𝑞𝐴 → ([𝑞 / 𝑥]Tr 𝑥 ↔ Tr 𝑞))
1918biimpd 228 . . . . . . . . . . . 12 (𝑞𝐴 → ([𝑞 / 𝑥]Tr 𝑥 → Tr 𝑞))
2013, 17, 19e33 43495 . . . . . . . . . . 11 (   𝑥𝐴 Tr 𝑥   ,   (𝑧𝑦𝑦 𝐴)   ,   (𝑦𝑞𝑞𝐴)   ▶   Tr 𝑞   )
21 trel 5275 . . . . . . . . . . . 12 (Tr 𝑞 → ((𝑧𝑦𝑦𝑞) → 𝑧𝑞))
2221expdcom 416 . . . . . . . . . . 11 (𝑧𝑦 → (𝑦𝑞 → (Tr 𝑞𝑧𝑞)))
238, 11, 20, 22e233 43526 . . . . . . . . . 10 (   𝑥𝐴 Tr 𝑥   ,   (𝑧𝑦𝑦 𝐴)   ,   (𝑦𝑞𝑞𝐴)   ▶   𝑧𝑞   )
24 elunii 4914 . . . . . . . . . . 11 ((𝑧𝑞𝑞𝐴) → 𝑧 𝐴)
2524ex 414 . . . . . . . . . 10 (𝑧𝑞 → (𝑞𝐴𝑧 𝐴))
2623, 13, 25e33 43495 . . . . . . . . 9 (   𝑥𝐴 Tr 𝑥   ,   (𝑧𝑦𝑦 𝐴)   ,   (𝑦𝑞𝑞𝐴)   ▶   𝑧 𝐴   )
2726in3 43370 . . . . . . . 8 (   𝑥𝐴 Tr 𝑥   ,   (𝑧𝑦𝑦 𝐴)   ▶   ((𝑦𝑞𝑞𝐴) → 𝑧 𝐴)   )
2827gen21 43380 . . . . . . 7 (   𝑥𝐴 Tr 𝑥   ,   (𝑧𝑦𝑦 𝐴)   ▶   𝑞((𝑦𝑞𝑞𝐴) → 𝑧 𝐴)   )
29 19.23v 1946 . . . . . . . 8 (∀𝑞((𝑦𝑞𝑞𝐴) → 𝑧 𝐴) ↔ (∃𝑞(𝑦𝑞𝑞𝐴) → 𝑧 𝐴))
3029biimpi 215 . . . . . . 7 (∀𝑞((𝑦𝑞𝑞𝐴) → 𝑧 𝐴) → (∃𝑞(𝑦𝑞𝑞𝐴) → 𝑧 𝐴))
3128, 30e2 43392 . . . . . 6 (   𝑥𝐴 Tr 𝑥   ,   (𝑧𝑦𝑦 𝐴)   ▶   (∃𝑞(𝑦𝑞𝑞𝐴) → 𝑧 𝐴)   )
32 pm2.27 42 . . . . . 6 (∃𝑞(𝑦𝑞𝑞𝐴) → ((∃𝑞(𝑦𝑞𝑞𝐴) → 𝑧 𝐴) → 𝑧 𝐴))
336, 31, 32e22 43432 . . . . 5 (   𝑥𝐴 Tr 𝑥   ,   (𝑧𝑦𝑦 𝐴)   ▶   𝑧 𝐴   )
3433in2 43366 . . . 4 (   𝑥𝐴 Tr 𝑥   ▶   ((𝑧𝑦𝑦 𝐴) → 𝑧 𝐴)   )
3534gen12 43379 . . 3 (   𝑥𝐴 Tr 𝑥   ▶   𝑧𝑦((𝑧𝑦𝑦 𝐴) → 𝑧 𝐴)   )
36 dftr2 5268 . . . 4 (Tr 𝐴 ↔ ∀𝑧𝑦((𝑧𝑦𝑦 𝐴) → 𝑧 𝐴))
3736biimpri 227 . . 3 (∀𝑧𝑦((𝑧𝑦𝑦 𝐴) → 𝑧 𝐴) → Tr 𝐴)
3835, 37e1a 43388 . 2 (   𝑥𝐴 Tr 𝑥   ▶   Tr 𝐴   )
3938in1 43332 1 (∀𝑥𝐴 Tr 𝑥 → Tr 𝐴)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 397  wal 1540  wex 1782  wcel 2107  wral 3062  [wsbc 3778   cuni 4909  Tr wtr 5266
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2109  ax-9 2117  ax-10 2138  ax-11 2155  ax-12 2172  ax-ext 2704
This theorem depends on definitions:  df-bi 206  df-an 398  df-or 847  df-3an 1090  df-tru 1545  df-ex 1783  df-nf 1787  df-sb 2069  df-clab 2711  df-cleq 2725  df-clel 2811  df-nfc 2886  df-ral 3063  df-v 3477  df-sbc 3779  df-in 3956  df-ss 3966  df-uni 4910  df-tr 5267  df-vd1 43331  df-vd2 43339  df-vd3 43351
This theorem is referenced by: (None)
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