This issue of the Annals of Mathematics is dedicated to Armand Borel, 1923–2003.


Armand Borel’s research lays at the foundations of much of today’s mathematics, particularly in the fields of topological, algebraic, and arithmetic groups. A strong believer in the written record, he often wrote expositions of the research of others, and devoted enormous energy to editorial work. He was an Editor of the Annals of Mathematics from 1962 to 1979.