George's Mathematical Family Tree "Arrow indicates Doctoral Advisor"

Zhe George Zhang, University of Waterloo (PhD 1993)
Performance Evaluation and Optimal Control for
Vacation Queueing Models and Multiclass Queueing Models
Operations Research/Applied Mathematics
Ray G. Vickson (1942-2019) , Massachusetts Institute of Technology (PhD 1969)
Theoretical Physics/Operations Research Obituary 2019
Kerson Huang (1928-2016), Massachusetts Institute of Technology (MIT) (PhD 1953)
Theoretical Physics; Obituary 2016
Victor Weisskopf (1908-2006), Massachusetts Institute of Technology (MIT) (PhD 1931)
Theoretical Physics
Max Born (1882-1970) , University of Göttingen
Theoretical Physics/Mathematics
1954 Nobel Prize in Physics
Carl David Tolmé Runge(1856 –1927)) , University of Göttingen
Karl Weierstrass (1815-1897) , University of Göttingen
Mathematics, "father of modern analysis"
Christoph Gudermann (1798-1852) University of Göttingen
Carl Friedrich Gauss (1777-1855) , University of Göttingen
Princeps mathematicorum (prince of mathematicians)
Johann Friedrich Pfaff (1765-1825) , University of Helmstedt
Abraham Gotthelf Kästner (1719 – 1800), University of Leipzig and University of Göttingen
Christian August Hausen (1693–1743) University of Leipzig
Johann Christoph Wichmannshausen (1663–1727) , University of Wittenberg
Philology Philosophy

Otto Mencke (1644 – 1707) University of Leipzig

Gottfried Wilhelm Leibniz (1646-1716), Leipzig University
Mathematics, metaphysics,
Developing calculus theory independently of Isaac Newton

Carl Jakob Thomasius (1622 –1684), University of Leipzig
Friedrich Leibniz (1597–1652) University of Leipzig
Father of Gottfried Wilhelm Leibniz