In 2021, Victor Zaika, Corresponding Member of the National Academy of Sciences of Ukraine and Winner of the State Prize of Ukraine in Science and Technology, turned 85. He’s been gone for seven years. V. Zaika lived a long and very intensive life in science. His mind had no peace in studying the various manifestations of life that he loved. Victor Zaika enriched science with his ideas and works, striving for possible perfection in everything he did. Generously gifted by nature, creatively charming, and inspiring colleagues by his own example, he was constantly in a state of scientific inquiry. And those, who were fortunate enough to work with him, are infinitely grateful to fate for that.