The other outstanding pupil was Yakov Tamarkin, also an extraordinary mathematician, and the two boys were close friends, almost always together during their years at school and university.
Ang iba pang mga natitirang mag-aaral ay Yakov Tamarkin, din ng isang katangi-tangi dalubbilang, at ang dalawang Boys ay malapit na kaibigan, halos laging magkasama sa panahon ng kanilang mga taon sa paaralan at unibersidad.