It is with deep sorrow that we announce the passing of Vitalii Borysovych Tiutiunnyk on October 18, 2026, at the age of 81. He was a Candidate of Physical and Mathematical Sciences, Associate Professor, and longtime lecturer at the Department of Quantum Radiophysics.

Vitalii Borysovych was a graduate of Karazin University and belonged to a generation of scientists for whom the university was not merely a place of work but a calling and a way of life. Here, he studied at the Faculty of Radiophysics, defended his Candidate of Sciences dissertation, became an associate professor, developed general and specialized lecture courses, introduced new laboratory exercises, and supervised the course projects and diploma theses of many students. V. B. Tiutiunnyk devoted considerable time and energy to the department and faculty, serving as the department’s academic secretary and Deputy Dean for Research. Even after retiring from teaching, he maintained close ties with his colleagues and continued to take an interest in the life of the department and university.

His colleagues will remember him as a demanding yet kind-hearted person who knew how to offer support, advice, and inspiration, always remaining dedicated to his work and attentive to others.

The cherished memory of Vitalii Borysovych will forever remain in the hearts of his colleagues and everyone who had the privilege of working alongside him.

The faculty community extends its sincere condolences to the family and loved ones of Vitalii Borysovych.