For many years Professor Witold Kosiński was associated with the Institute of Fundamental Technological Research of the Polish Academy of Sciences.

Professor Kosiński was a researcher specialising in continuum mechanics, thermodynamics, and wave propagation as well as in mathematical foundations of information technology and particularly in artificial intelligence, fuzzy logic and evolutionary algorithms.

His fields of research have also comprised applied mathematics and partial differential equations of hyperbolic type as well as neural networks and computational intelligence.

Professor Kosiński defended his Master's Thesis, "On the existence of functions of two variables satisfying some differential inequality", at the Faculty of Mathematics and Mechanics at the University of Warsaw in 1969.

("doktor habilitowany") degree (see: Habilitation) at the Institute of the Fundamental Technological Research in the Polish Academy of Sciences (IPPT PAN).

Kosiński was an editor of many volumes of collective works and conference materials and an author of two monographs: as well as over 230 of other scientific publications.