Petr Simon (1944-2018)

This brief text is in memory of Professor Ivan Kupka. It presents his vision, scientific life, his interest in mathematics and our join collaboration.

This is an introduction of the volume of the journal Commentationes Mathematicae Universitatis Caroalinae dedicated to the memory of V\v{e}ra Trnkov\'a}.

The article is dedicated to thye memory of a distinguished mathematician Professor Misha Shubin

This article is a tribute to one of the most prominent Polish mathematicians Jozef Marcinkiewicz who perished 80 years ago in the Katyn' massacre. His personality and main mathematical achievements are described.

These are reminiscences of I.M.Gelfand's mathematical seminar of 1970s-1980s. The essay will appear in the March 2016 issue of Notices of the AMS.

Hans Grauert died in September of 2011. This article reviews his life in mathematics and recalls some detail his major accomplishments.

A homage to the life and mathematics of John K. S. McKay. Obituary for the Bulletin of the London Mathematical Society.

The article describes the biography and manifold contributions to research in mathematics of Mikhail Aleksandrovich Shubin.

This article is a collection of several memories for a special issue of SIGMA devoted to Dmitry Borisovich Fuchs.

This paper was written as a tribute to Mario Petrich, a major figure in the history of semigroup theory. Publication is posthumous in view of his recent death.