The two research institutes, one for pure mathematics and one for applied mathematics, were merged into a plan for a single mathematics institute and accepted in 1948. Kuratowski was appointed the Director of the Mathematical Institute of the Polish Academy of Sciences in 1949.
Ang dalawang research institutes, isa para sa mga purong matematika at isa-apply para sa matematika, ay daop sa isang plano para sa isang solong matematika instituto at tinanggap sa 1948. Kuratowski ay hihirangin ng Direktor ng matematika Institute ng Polish Academy of Sciences in 1949.