Harry Dym (Ph.D, MIT, 1965); Dym's thesis advisor was
Henry P. McKean (Ph.D., Princeton, 1955); McKean's thesis advisor was
William Feller(Ph.D., Gottingen, 1926); Feller's thesis advisor was
Richard Courant(Ph.D., Gottingen, 1910); Courant's thesis advisor was
David Hilbert(Ph.D.,Konisberg, 1885)
.
Pl"ucker-?
/
Hilbert-Lindemann-Klein Poisson
\ / \
Lipschitz-Dirichlet Lagrange-?
\ /
Fourier