The work of Hans Lewy (1904--1988) has touched nearly every
significant area of functional analysis and has had a profound
influence in the direction of applied mathematics and partial
differential equations from the late 1920s. Famous for his
originality and ingenuity, Lewy illustrated and revealed fundamental
principles on the theory of partial differential equations, in
particular, on elliptic equations and free boundary problems. The
papers presented in this two-volume set represent a selection of his
best work and are augmented by commentary from his students,
colleagues, and family.
David Kinderlehrer
elliptic equations functional analysis pdes partial differential equations