Theorem domentr 6816

Description: Transitivity of dominance and equinumerosity. (Contributed by NM, 7-Jun-1998.)

Assertion

Ref	Expression
domentr	|- ( ( A ~<_ B /\ B ~~ C ) -> A ~<_ C )

Proof of Theorem domentr

Step	Hyp	Ref	Expression
1		endom 6788	. 2 |- ( B ~~ C -> B ~<_ C )
2		domtr 6810	. 2 |- ( ( A ~<_ B /\ B ~<_ C ) -> A ~<_ C )
3	1, 2	sylan2 286	1 |- ( ( A ~<_ B /\ B ~~ C ) -> A ~<_ C )

Syntax hints:   -> wi 4   /\ wa 104   class class class wbr 4018   ~~ cen 6763   ~<_ cdom 6764

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 710  ax-5 1458  ax-7 1459  ax-gen 1460  ax-ie1 1504  ax-ie2 1505  ax-8 1515  ax-10 1516  ax-11 1517  ax-i12 1518  ax-bndl 1520  ax-4 1521  ax-17 1537  ax-i9 1541  ax-ial 1545  ax-i5r 1546  ax-13 2162  ax-14 2163  ax-ext 2171  ax-sep 4136  ax-pow 4192  ax-pr 4227  ax-un 4451

This theorem depends on definitions:  df-bi 117  df-3an 982  df-tru 1367  df-nf 1472  df-sb 1774  df-eu 2041  df-mo 2042  df-clab 2176  df-cleq 2182  df-clel 2185  df-nfc 2321  df-ral 2473  df-rex 2474  df-v 2754  df-un 3148  df-in 3150  df-ss 3157  df-pw 3592  df-sn 3613  df-pr 3614  df-op 3616  df-uni 3825  df-br 4019  df-opab 4080  df-id 4311  df-xp 4650  df-rel 4651  df-cnv 4652  df-co 4653  df-dm 4654  df-rn 4655  df-fun 5237  df-fn 5238  df-f 5239  df-f1 5240  df-f1o 5242  df-en 6766  df-dom 6767

This theorem is referenced by:  xpdom1g  6858  domen2  6870  phplem4dom  6889  phpm  6892  fisbth  6910  infnfi  6922  fientri3  6942  exmidfodomrlemr  7230  exmidfodomrlemrALT  7231  hashennnuni  10790  xpct  12446  pwf1oexmid  15203  sbthom  15228