Yeshkeyev, A., Ulbrikht, O. and Koshekova, A. 2025. PROPERTIES OF CATEGORICITY FOR KAISER CLASS. Bulletin of Abai KazNPU. Series of Physical and Mathematical sciences. 91, 3 (Sep. 2025), 29–42. DOI:https://doi.org/10.51889/2959-5894.2025.91.3.003.