Mathematician Sergey Mergelyan

Sergey Nikitovich Mergelyan (1928–2008) was an outstanding Soviet and Armenian mathematician. According to the source, he is regarded as a pioneer in quantum mechanics and complex analysis. He became the youngest Doctor of Physical and Mathematical Sciences in the history of the USSR, defending his doctoral dissertation at the age of 20, and at 24 the youngest corresponding member of the USSR Academy of Sciences.

His theorem on the possibility of uniform polynomial approximation of functions of a complex variable is recognised as a classic and is included in university mathematics courses. He was the founder and first director of the Yerevan Research Institute of Mathematical Machines.

The photograph shows a young man in a suit and tie in front of a blackboard covered with formulas.