0. Bernd Hamann (born 1963, PhD 1991, Arizona State University) was advised by Gregory Morris Nielson.

1. Gregory Morris Nielson (born 1943, PhD 1970, University of Utah) was advised by Robert Ellis Barnhill.

2. Robert Ellis Barnhill (born 1939, PhD 1964, University of Wisconsin, Madison) was advised by Preston Clarence Hammer.

3. Preston Clarence Hammer (1913-1986, PhD 1939, The Ohio State University) was advised by Tibor Rado.

4. Tibor Rado (1895-1965, PhD 1922, University of Szeged) was advised by Frigyes (Friedrich) Riesz and Lipot (Leopold) Fejer.

5.1 The advisor of Frigyes (Friedrich) Riesz (1880-1956, PhD 1902, Eoetvoes Lorand University) is unknown.

5.2. Lipot (Leopold) Fejer (1880-1959, PhD 1902, Eoetvoes Lorand University) was advised by Hermann Amandus Schwarz.

6. Hermann Amandus Schwarz (1843-1921, PhD 1864, University of Berlin) was advised by Ernst Eduard Kummer and Karl Theodor Wilhelm Weierstrass.

7.1. Ernst Eduard Kummer (1810-1893, PhD 1831, Martin-Luther-University Halle-Wittenberg) was advised by Heinrich Ferdinand Scherk.

7.2. Karl Theodor Wilhelm Weierstrass (1815-1897, PhD [honoris causa] 1854, University of Koenigsberg) was advised by Christoph Gudermann.

8.1. Heinrich Ferdinand Scherk (1798-1885, PhD 1823, University of Berlin) was advised by Friedrich Wilhelm Bessel and Heinrich Wilhelm Brandes.

8.2. Christoph Gudermann (1798-1852, PhD 1841, Georg-August-University Goettingen) was advised by Carl Friedrich Gauss.

9.1. Friedrich Wilhelm Bessel (1784-1846, PhD 1810, Georg-August-University Goettingen) was advised by Carl Friedrich Gauss.

9.2. Heinrich Wilhelm Brandes (1777-1834, PhD 1800, Georg-August-University Goettingen) was advised by Abraham Gotthelf Kaestner and Georg Christoph Lichtenberg.

10.1. Carl Friedrich Gauss (1777-1855, PhD 1799, University of Helmstedt) was advised by Johann Friedrich Pfaff.

10.2. Georg Christoph Lichtenberg (1742-1799, PhD 1765, Georg-August-University Goettingen) was advised by Abraham Gotthelf Kaestner.

11. Johann Friedrich Pfaff (1765-1825, PhD 1786, Georg-August-University Goettingen) was advised by Abraham Gotthelf Kaestner.

12. Abraham Gotthelf Kaestner (1719-1800, PhD 1739, University of Leipzig) was advised by Christian August Hausen.

13. Christian August Hausen (1693-1743, PhD 1713, Martin-Luther-University Halle-Wittenberg) was advised by Johann Christoph Wichmannshausen.

14. Johann Christoph Wichmannshausen (1663-1727, PhD 1685, University of Leipzig) was advised by Otto Mencke.

15. The advisor of Otto Mencke (1644-1707, PhD 1666, University of Leipzig) is unknown.