Professor Daniyal Israfilzade, Doctor of Physical and Mathematical Sciences from Balıkesir University (Turkey) and member of the American Mathematical Association, delivered a lecture to students and faculty of Zhubanov University. The scientist presented a report on the topic «Theory of Function Approximation», introducing modern methods for solving complex functional problems. Professor Israfilzade is also conducting joint scientific research with university faculty members. A collaborative article by Daniyal Israfilzade and Associate …