Robert Langlands

Alexandre Grothendieck, Pierre Deligne, and Robert P. Langlands. Drinfeld also conducted research in mathematical physics, developing a classification theorem for quantum groups (a subclass of Hopf algebras). He also introduced the ideas of the Poisson-Lie group and Poisson-Lie actions in his work on Yang-Baxter equations, work also related to the…

…of a 1967 letter that Robert Langlands wrote to André Weil, who was widely regarded as the leading number theorist of his generation. Langlands suggested a far-reaching generalization of what was already known concerning a deep connection between algebraic numbers and certain complex functions related to the classical Riemann zeta…