David Borwein

David Borwein (born 1924, in Kaunas, Lithuania) is a Canadian mathematician known for his research in the summability theory of series and integrals. He has also done work in measure theory and probability theory, number theory, and approximate subgradients and coderivatives. He has recently collaborated with his son, Jonathan Borwein, and with B.A. Mares Jr. on the properties of single- and many-variable sinc integrals.