ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  ssel2 GIF version

Theorem ssel2 3219
Description: Membership relationships follow from a subclass relationship. (Contributed by NM, 7-Jun-2004.)
Assertion
Ref Expression
ssel2 ((𝐴𝐵𝐶𝐴) → 𝐶𝐵)

Proof of Theorem ssel2
StepHypRef Expression
1 ssel 3218 . 2 (𝐴𝐵 → (𝐶𝐴𝐶𝐵))
21imp 124 1 ((𝐴𝐵𝐶𝐴) → 𝐶𝐵)
Colors of variables: wff set class
Syntax hints:  wi 4  wa 104  wcel 2200  wss 3197
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-5 1493  ax-7 1494  ax-gen 1495  ax-ie1 1539  ax-ie2 1540  ax-8 1550  ax-11 1552  ax-4 1556  ax-17 1572  ax-i9 1576  ax-ial 1580  ax-i5r 1581  ax-ext 2211
This theorem depends on definitions:  df-bi 117  df-nf 1507  df-sb 1809  df-clab 2216  df-cleq 2222  df-clel 2225  df-in 3203  df-ss 3210
This theorem is referenced by:  elnn  4698  funimass4  5686  fvelimab  5692  ssimaex  5697  funconstss  5755  rexima  5884  ralima  5885  1st2nd  6333  f1o2ndf1  6380  tfri1dALT  6503  eldju1st  7249  axsuploc  8230  lbinf  9106  dfinfre  9114  lbzbi  9823  elfzom1elp1fzo  10420  ssfzo12  10442  seq3split  10722  seqsplitg  10723  shftlem  11342  uzwodc  12573  subgintm  13750  subrngintm  14191  subrgintm  14222  tgcl  14753  neipsm  14843  txbasval  14956  elmopn2  15138  metrest  15195  cncfmet  15281  negcncf  15294  ply1term  15432  plyconst  15434  reeff1olem  15460  usgruspgrben  15999
  Copyright terms: Public domain W3C validator