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Theorem sylan9ssr 3582
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 3581 . 2 ((𝜑𝜓) → 𝐴𝐶)
43ancoms 468 1 ((𝜓𝜑) → 𝐴𝐶)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 383  wss 3540
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590
This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-clab 2597  df-cleq 2603  df-clel 2606  df-in 3547  df-ss 3554
This theorem is referenced by:  intssuni2  4437  marypha1  8223  cardinfima  8803  cfflb  8964  ssfin4  9015  acsfn  16143  mrelatlub  17009  efgval  17953  islbs3  18976  kgentopon  21151  txlly  21249  sigaclci  29522  bnj1014  30284  topjoin  31530  filnetlem3  31545  poimirlem16  32595  mblfinlem3  32618  sspwimpALT  38183  sspwimpALT2  38186
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