Louis Halle Rowen is a professor emeritus in the Department of Mathematics, Bar-Ilan University. He received his PhD from Yale University. His research specialty is noncommutative algebra, in particular division algebras as well as the structure of rings. He is an enthusiastic cellist, having soloed with the Jerusalem Symphony. Prof. Rowen is a fellow of the American Mathematics Society, and has been awarded the Landau Prize, Van Buren Mathematics Prize, and Van Amringe Mathematics Prize. Uzi Vishne is a professor in the Department of Mathematics, Bar-Ilan University. He holds a PhD from Bar-Ilan University. He is managing editor of the Israel Mathematics Conference Proceedings (IMCP) book series. He has authored or co-authored over seventy papers in algebra, arithmetic, combinatorics, and their applications.