Daniel Kubert

Daniel Sion Kubert(/ˈkjuːbərt/;October 18, 1947– January 5, 2010) was an American mathematician who introducedmodular unitsandKubert identities.

He grew up in a secular Jewish family in Elkins Park, Pennsylvania, the son of David Kubert, an attorney, and Adele (Sion) Kubert, a high school teacher. Daniel graduated from Philadelphia's Central High School in 1965. Kubert graduated from Brown University in 1969, receiving B.S. and M.A. degrees in the same year.He received his Ph.D. in mathematics fromHarvard Universityin 1973,where his dissertation "Universal Bounds on the Torsion and Isogenies of Elliptic Curves" was supervised byBarry Mazur.

Kubert served as a Gibbs Instructor atYale Universityfrom 1973 to 1975.His work on modular units was done in collaboration with Yale mathematicianSerge Lang. Kubert was hired as an assistant professor atCornell Universityin 1975,and was still there at the end of the decade. By the early 1980s, Kubert was at theUniversity of Pennsylvania.He also had two stints at theInstitute for Advanced Study,in 1979–80 and 1984–85.

In later life, Kubert was a resident of Philadelphia.

Selected publications

• Kubert, Daniel S.;Lang, Serge(1981),Modular units,Grundlehren der Mathematischen Wissenschaften [Fundamental Principles of Mathematical Science], vol. 244, Berlin, New York:Springer-Verlag,ISBN978-0-387-90517-4,MR0648603,Zbl0492.12002
• Kubert, Dan;Lang, Serge(1975), "Units in the modular function field. I",Mathematische Annalen,218(1): 67–96,doi:10.1007/BF01350068,ISSN0025-5831,MR0437496,S2CID177788984,Zbl0311.14005

External links

• Daniel Kubertat theMathematics Genealogy Project
• In memory post at Central High School page