ivan vakarchuk (; 6 march 1947 – 4 april 2020) was a ukrainian physicist and politician. from 1990 to 2007 and again between 2010 and 2013, he was rector of the university of lviv. he served as minister of education and science from 2007 to 2010. he was the father of svyatoslav vakarchuk, lead singer of the rock band okean elzy.