Arjen Klaas Lenstra is a Dutch mathematician, cryptographer and computational number theorist. He is a professor emeritus from the École Polytechnique Fédérale de Lausanne where he headed of the Labor
Jan Karel Lenstra is a Dutch mathematician and operations researcher, known for his work on scheduling problems, the travelling salesman problem, complexity, approximation, and local search.
Arjen Lenstra
…Excellence in Mathematics 2008 Award. Lenstra's brother and co-author Hendrik Lenstra is a professor in mathematics at Leiden University and his brother Jan Karel Lenstra is a former director of Centrum Wiskunde & Informatica (CWI). L-notation…