Volume 49, No. 1–3.
Serdica Mathematical Journal
Special issue dedicated to the memory of Asen Dontchev.
Guest editors Michail I. Krastanov, Nadezhda K. Ribarska, Tsvetomir Y. Tsachev, Vladimir M. Veliov, Nadia P. Zlateva
Asen Lyubomirov Dontchev is a world-renowned mathematician who has worked in the fields of variational analysis, optimization and optimal control.
He passed away at the age of 73 in Ann Arbor, MI, USA, on September 16, 2021.