Zdzislaw Pawlak Commemorating His Life and Work

Zdziss law Pawlak will be remembered as a great human being with exceptional humility, wit and kindness as well as an extraordinarily innovative researcher with exceptional stature. His research contributions have had far-reaching implications inasmuch as his works are fundamental in establishing new perspectives for scientific research in a wide spectrum of fields. Professor Pawlak's most widely recognized contribution is his brilliant approach to classifying objects with their attributes (features) and his introduction of approximation spaces, which establish the foundations of granular computing and provide frameworks for perception and knowledge discovery in many areas. a new method for random number generation was the first publication abroad in informatics by a researcher from Poland 2. In 1958, Pawlak completed his doctoral degree from the Institute of Fundamental Technological Research at the Polish Academy of Science with a Thesis on Applications of Graph Theory to Decoder Synthesis. During 1957-1959, Pawlak was also a member of a research team that constructed one of the first computers in Poland called UMC 1. The original arithmetic of this computer with the base "-2 " was due to Pawlak. He received his habilitation from the Institute of Mathematics at the Polish Academy of Sciences in 1963. In his habilitation entitled Organization of Address-Less Machines, Pawlak proposed and investigated parenthesis-free languages, a generalization of polish notation introduced by Jan Lukasiewicz 3. During succeeding years, Pawlak also worked at the Institute of Mathematics at Warsaw University and, in 1965, introduced the foundations for modeling DNA and what has come to be known as molecular computing 4. He was searching