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Theorem sylan9ssr 3988
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 3987 . 2 ((𝜑𝜓) → 𝐴𝐶)
43ancoms 458 1 ((𝜓𝜑) → 𝐴𝐶)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 395  wss 3940
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1789  ax-4 1803  ax-5 1905  ax-6 1963  ax-7 2003  ax-8 2100  ax-9 2108  ax-ext 2695
This theorem depends on definitions:  df-bi 206  df-an 396  df-tru 1536  df-ex 1774  df-sb 2060  df-clab 2702  df-cleq 2716  df-clel 2802  df-v 3468  df-in 3947  df-ss 3957
This theorem is referenced by:  intssuni2  4967  marypha1  9425  cardinfima  10088  cfflb  10250  ssfin4  10301  acsfn  17602  mrelatlub  18517  efgval  19627  islbs3  20996  kgentopon  23364  txlly  23462  sigaclci  33619  bnj1014  34461  topjoin  35740  filnetlem3  35755  poimirlem16  36994  mblfinlem3  37017  sspwimpALT  44175  sspwimpALT2  44178  setrecsres  47935
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