Prompt
Generate a realistic image of a Soviet mathematician from the mid-20th century, sitting at a desk with papers and mathematical equations, wearing glasses and a serious expression, in a style reminiscent of a black and white photograph from the Soviet era, with a subtle background of mathematical symbols and a hint of a library or study in the background, representing Alexander Shirshov, a prominent mathematician known for Shirshov's theorem, Shirshov–Witt theorem, and Gröbner–Shirshov bases.