Every mathematician begins as an apprentice (graduate
student) and has a teacher (his/her advisor). An apprentice then
becomes a teacher and has his/her own apprentices. This forms a
chain, a mathematical genealogy. Here is my mathematical
genealogy from The Mathematics
Genealogy Project. (To the right are the university and the year the
person earned his Ph.D)
Unknown

Erhard Weigel (Universitat Leipzig 1650)

Gottfried Leibniz (Universitat Altdorf 1666)

Jacob Bernoulli

Johann Bernoulli (1694)

Leonhard Euler (Universitat Basel 1726)

Joseph Louis Lagrange

Simeon Denis Poisson

Michel Chasles (Ecole Polytechnique 1814)

Hubert Anson Newton (B.S. Yale University 1850)

Eliakim Hastings Moore (Yale University 1885)
& Oswald Veblen (University of Chicago 1903)

Robert Lee Moore (University of Chicago 1905)

John Robert Kline (University of Pennsylvania 1916)

Donald Alexander Flanders (University of Pennsylvania 1927)

Jacob Wolfowitz (New York University 1942)

Jack Carl Kiefer (Columbia University 1952)

Lawrence D. Brown (Cornell University 1964)

T. Tony Cai (Cornell University 1996)