Sara Billey (UCSD 1990-94) doctoral student under A. Garsia and M. Haiman; An Abstract Definition of Schubert Polynomials. Adriano Garsia asked me to act as her advisor during her residency in Boston (1991-93), I suggested to work on Schubert polynomials.
Monica Vazirani (Harvard 1992-93) master's thesis; A new hyperoctahedral Descent Algebra.
Harry L. Wolfgang (Harvard 1992-93): master's thesis, On Hochschild Homology. A portion of his Ph. D. Thesis at MIT (1994-97) is based on more work we did together.
T. K. Quang (York 1995-96) master's thesis; Operads in Some Symmetric Monoidal Categories.
Geanina Tudose (York 1998-2001) doctoral student; On the Combinatorial of sl(n)-Fusion Algebra.
J. C. Aval (U. de Bordeaux 1999-2001) doctoral student under Laurent Habsieger. Co-supervised thesis research; La conjecture n!