Қоштыбаев, Т., Алиева, М. and Татенов, А. 2024. MATHEMATICAL BASIS OF QUANTUM MECHANICAL SYSTEMS. Bulletin of Abai KazNPU. Series of Physical and mathematical sciences. 86, 2 (Jun. 2024), 83–95. DOI:https://doi.org/10.51889/2959-5894.2024.86.2.008.