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Theorem vtoclibr 2451
Description: Variable to class conversion of transitive, irreflexive relation.
Hypotheses
Ref Expression
vtoclr.1 |- Rel R
vtoclr.2 |- ((xRy /\ yRz) -> xRz)
vtoclibr.3 |- -. xRx
Assertion
Ref Expression
vtoclibr |- ((ARB /\ BRC) -> ARC)
Distinct variable group(s):   x,y,z,A   x,B,y,z   x,C,y,z   x,R,y,z

Proof of Theorem vtoclibr
StepHypRef Expression
1 breq1 2065 . . . . . . . . 9 |- (x = B -> (xRx <-> BRx))
2 breq2 2066 . . . . . . . . 9 |- (x = B -> (BRx <-> BRB))
31, 2bitrd 406 . . . . . . . 8 |- (x = B -> (xRx <-> BRB))
43negbid 463 . . . . . . 7 |- (x = B -> (-. xRx <-> -. BRB))
5 vtoclibr.3 . . . . . . 7 |- -. xRx
64, 5vtoclg 1383 . . . . . 6 |- (B e. V -> -. BRB)
7 vtoclr.1 . . . . . . . 8 |- Rel R
87brrelexi 2447 . . . . . . 7 |- (BRB -> B e. V)
98con3i 90 . . . . . 6 |- (-. B e. V -> -. BRB)
106, 9pm2.61i 110 . . . . 5 |- -. BRB
11 brprc 2097 . . . . 5 |- (-. C e. V -> (BRC <-> BRB))
1210, 11mtbiri 539 . . . 4 |- (-. C e. V -> -. BRC)
1312a3i 69 . . 3 |- (BRC -> C e. V)
14 vtoclr.2 . . . 4 |- ((xRy /\ yRz) -> xRz)
157, 14vtoclr 2449 . . 3 |- (C e. V -> ((ARB /\ BRC) -> ARC))
1613, 15syl 12 . 2 |- (BRC -> ((ARB /\ BRC) -> ARC))
1716anabsi7 379 1 |- ((ARB /\ BRC) -> ARC)
Colors of variables: wff set class
Syntax hints:  -. wn 1   -> wi 2   /\ wa 196   = wceq 1091   e. wcel 1092  Vcvv 1348   class class class wbr 2054  Rel wrel 2415
This theorem was proved from axioms:  ax-1 3  ax-2 4  ax-3 5  ax-mp 6  ax-4 673  ax-5 674  ax-6 675  ax-7 676  ax-gen 677  ax-8 798  ax-9 799  ax-10 800  ax-11 801  ax-12 802  ax-13 804  ax-14 805  ax-16 922  ax-17 925  ax-ext 1074  ax-rep 1075  ax-pow 1077
This theorem depends on definitions:  df-bi 128  df-or 197  df-an 198  df-ex 679  df-sb 853  df-clab 1093  df-cleq 1097  df-clel 1099  df-v 1349  df-dif 1489  df-un 1490  df-in 1491  df-ss 1492  df-nul 1708  df-pw 1799  df-sn 1811  df-pr 1812  df-op 1815  df-br 2063  df-opab 2098  df-xp 2424  df-rel 2425
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