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Theorem sylan9ssr 3981
Description: A subclass transitivity deduction. (Contributed by NM, 27-Sep-2004.)
Hypotheses
Ref Expression
sylan9ssr.1 (𝜑𝐴𝐵)
sylan9ssr.2 (𝜓𝐵𝐶)
Assertion
Ref Expression
sylan9ssr ((𝜓𝜑) → 𝐴𝐶)

Proof of Theorem sylan9ssr
StepHypRef Expression
1 sylan9ssr.1 . . 3 (𝜑𝐴𝐵)
2 sylan9ssr.2 . . 3 (𝜓𝐵𝐶)
31, 2sylan9ss 3980 . 2 ((𝜑𝜓) → 𝐴𝐶)
43ancoms 461 1 ((𝜓𝜑) → 𝐴𝐶)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 398  wss 3936
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2793
This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-clab 2800  df-cleq 2814  df-clel 2893  df-in 3943  df-ss 3952
This theorem is referenced by:  intssuni2  4901  marypha1  8898  cardinfima  9523  cfflb  9681  ssfin4  9732  acsfn  16930  mrelatlub  17796  efgval  18843  islbs3  19927  kgentopon  22146  txlly  22244  sigaclci  31391  bnj1014  32233  topjoin  33713  filnetlem3  33728  poimirlem16  34923  mblfinlem3  34946  sspwimpALT  41279  sspwimpALT2  41282  setrecsres  44824
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