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Theorem sylan9ssr 3617
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 3616 . 2 ((𝜑𝜓) → 𝐴𝐶)
43ancoms 469 1 ((𝜓𝜑) → 𝐴𝐶)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 384  wss 3574
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-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-clab 2609  df-cleq 2615  df-clel 2618  df-in 3581  df-ss 3588
This theorem is referenced by:  intssuni2  4502  marypha1  8340  cardinfima  8920  cfflb  9081  ssfin4  9132  acsfn  16320  mrelatlub  17186  efgval  18130  islbs3  19155  kgentopon  21341  txlly  21439  sigaclci  30195  bnj1014  31030  topjoin  32360  filnetlem3  32375  poimirlem16  33425  mblfinlem3  33448  sspwimpALT  39161  sspwimpALT2  39164
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