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Theorem sdomtr 8098
Description: Strict dominance is transitive. Theorem 21(iii) of [Suppes] p. 97. (Contributed by NM, 9-Jun-1998.)
Assertion
Ref Expression
sdomtr  |-  ( ( A  ~<  B  /\  B  ~<  C )  ->  A  ~<  C )

Proof of Theorem sdomtr
StepHypRef Expression
1 sdomdom 7983 . 2  |-  ( A 
~<  B  ->  A  ~<_  B )
2 domsdomtr 8095 . 2  |-  ( ( A  ~<_  B  /\  B  ~<  C )  ->  A  ~<  C )
31, 2sylan 488 1  |-  ( ( A  ~<  B  /\  B  ~<  C )  ->  A  ~<  C )
Colors of variables: wff setvar class
Syntax hints:    -> wi 4    /\ wa 384   class class class wbr 4653    ~<_ cdom 7953    ~< csdm 7954
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ral 2917  df-rex 2918  df-rab 2921  df-v 3202  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-br 4654  df-opab 4713  df-id 5024  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-er 7742  df-en 7956  df-dom 7957  df-sdom 7958
This theorem is referenced by:  sdomn2lp  8099  2pwuninel  8115  2pwne  8116  r1sdom  8637  alephordi  8897  pwsdompw  9026  gruina  9640  rexpen  14957
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