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Theorem sylan9ssr 3931
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 3930 . 2 ((𝜑𝜓) → 𝐴𝐶)
43ancoms 458 1 ((𝜓𝜑) → 𝐴𝐶)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 395  wss 3883
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1799  ax-4 1813  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2110  ax-9 2118  ax-ext 2709
This theorem depends on definitions:  df-bi 206  df-an 396  df-tru 1542  df-ex 1784  df-sb 2069  df-clab 2716  df-cleq 2730  df-clel 2817  df-v 3424  df-in 3890  df-ss 3900
This theorem is referenced by:  intssuni2  4901  marypha1  9123  cardinfima  9784  cfflb  9946  ssfin4  9997  acsfn  17285  mrelatlub  18195  efgval  19238  islbs3  20332  kgentopon  22597  txlly  22695  sigaclci  32000  bnj1014  32841  topjoin  34481  filnetlem3  34496  poimirlem16  35720  mblfinlem3  35743  sspwimpALT  42434  sspwimpALT2  42437  setrecsres  46293
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