Projective duality is a very classical notion naturally arising in various areas of mathematics, such as algebraic and differential geometry, combinatorics, top

Projective geometry is not only a jewel of mathematics, but has also many applications in modern information and communication science. This book presents the f

A collection of survey articles by leading young researchers, showcasing the vitality of Russian mathematics.

Many of the familiar integrable systems of equations are symmetry reductions of self-duality equations on a metric or on a Yang-Mills connection. For example, t