Richard Delaware

My Mathematics Genealogy,
and My Erdös Number


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Mathematics Genealogy Trees

The year listed is the year the Ph.D. was awarded.

Tree 1: By major advisors:
  • 1665 Mencke, Otto
  • 1685 Wichmannshausen, Johann
  • 1713 Hausen, Christian
  • 1739 Kaestner, Abraham
  • 1786 Pfaff, Johann
  • 1799 Gauss, C. F.
  • 1812 Gerling, Christian
  • 1824 Plücker, Julius
  • 1868 Klein, C. Felix
  • 1873 Lindemann, C. L. Ferdinand
  • 1885 Hilbert, David
  • 1911 Steinhaus, Hugo
  • 1921 Rajchman, Aleksander
  • 1923 Zygmund, Antoni
  • 1954 Waterman, Daniel
  • 1966 Solomon, Donald
  • 1973 Foran, James
  • 2000 Delaware, Richard


Tree 2: By major advisors up to Klein,
then again major advisors
above Klein's second advisor, Lipschitz:

  • 1650 Weigel, Erhard
  • 1666 Leibniz, Gottfried
  • ----- Bernoulli, Jacob
  • 1694 Bernoulli, Johann
  • 1726 Euler, Leonhard
  • ----- Lagrange, Joseph L.
  • ----- Poisson, Simeon
  • 1827 Dirichlet, Gustav
  • 1853 Lipschitz, Rudolf

  • 1868 Klein, C. Felix
  • 1873 Lindemann, C. L. Ferdinand
  • 1885 Hilbert, David
  • 1911 Steinhaus, Hugo
  • 1921 Rajchman, Aleksander
  • 1923 Zygmund, Antoni
  • 1954 Waterman, Daniel
  • 1966 Solomon, Donald
  • 1973 Foran, James
  • 2000 Delaware, Richard
Data obtained from The Mathematics Genealogy Project.
[Last updated here: 6 May 2005.]


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My Erdös Number is 4

My Links:


The Distribution of Erdös Numbers [updated 6 May 2005]

Erdös number 0 --- 1 person (Erdös himself!)
Erdös number 1 --- 504 people
Erdös number 2 --- 6593 people
Erdös number 3 --- 33605 people
Erdös number 4 --- 83642 people
Erdös number 5 --- 87760 people
Erdös number 6 --- 40014 people
Erdös number 7 --- 11591 people
Erdös number 8 --- 3146 people
Erdös number 9 --- 819 people
Erdös number 10 -- 244 people
Erdös number 11 -- 68 people
Erdös number 12 -- 23 people
Erdös number 13 -- 5 people
Erdös number 14 -- 0 people

Data obtained from The Erdös Number Project, and MathSciNet.

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