ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  relssdv Unicode version

Theorem relssdv 4847
Description: Deduction from subclass principle for relations. (Contributed by NM, 11-Sep-2004.)
Hypotheses
Ref Expression
relssdv.1  |-  ( ph  ->  Rel  A )
relssdv.2  |-  ( ph  ->  ( <. x ,  y
>.  e.  A  ->  <. x ,  y >.  e.  B
) )
Assertion
Ref Expression
relssdv  |-  ( ph  ->  A  C_  B )
Distinct variable groups:    x, y, A   
x, B, y    ph, x, y

Proof of Theorem relssdv
StepHypRef Expression
1 relssdv.2 . . 3  |-  ( ph  ->  ( <. x ,  y
>.  e.  A  ->  <. x ,  y >.  e.  B
) )
21alrimivv 1924 . 2  |-  ( ph  ->  A. x A. y
( <. x ,  y
>.  e.  A  ->  <. x ,  y >.  e.  B
) )
3 relssdv.1 . . 3  |-  ( ph  ->  Rel  A )
4 ssrel 4843 . . 3  |-  ( Rel 
A  ->  ( A  C_  B  <->  A. x A. y
( <. x ,  y
>.  e.  A  ->  <. x ,  y >.  e.  B
) ) )
53, 4syl 14 . 2  |-  ( ph  ->  ( A  C_  B  <->  A. x A. y (
<. x ,  y >.  e.  A  ->  <. x ,  y >.  e.  B
) ) )
62, 5mpbird 167 1  |-  ( ph  ->  A  C_  B )
Colors of variables: wff set class
Syntax hints:    -> wi 4    <-> wb 105   A.wal 1396    e. wcel 2205    C_ wss 3214   <.cop 3697   Rel wrel 4759
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-14 2208  ax-ext 2216  ax-sep 4233  ax-pow 4292  ax-pr 4327
This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1812  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-v 2817  df-un 3218  df-in 3220  df-ss 3227  df-pw 3676  df-sn 3700  df-pr 3701  df-op 3703  df-opab 4177  df-xp 4760  df-rel 4761
This theorem is referenced by:  relssres  5081  poirr2  5160  relssdmrn  5288  subrgdvds  14481  txdis1cn  15269
  Copyright terms: Public domain W3C validator