Entrevista con Alexander Aptekarev, Director del departamento de Matemáticas del Instituto Keldysh de Matemáticas Aplicadas (Rusia), Catedrático en la Universidad Estatal de Moscú y Catedratico de Excelencia de la Universidad Carlos III de Madrid.
Interview with Alexander Aptekarev, Head of the Mathematics Department at the Keldysh Institute of Applied Mathematics (Moscow, Russia), Professor at Moscow State University and Chair of Excellence at Carlos III University of Madrid, sponsored by the Mathematics department.

He speaks about rational approximants, analityc functions, and about his two research projects at the UC3M: arithmetical structure of the mathematical constants; and the relation between multivariate analytic functions and rational approximants.