He was a student of philosophy at Kiev from 1918 to 1920. However he was able to pursue his mathematical interests and studied algebra and number theory in addition to philosophy.
Siya ay isang mag-aaral ng pilosopiya at Kiev 1918-1920. Gayunman siya ay able sa ituloy ang kanyang interes at matematika-aral ng algebra at numero ng teorya bilang karagdagan sa pilosopiya.