Education
His Doctor of Science dissertation he defended in 1992 was on "The Ukrainian Cossack Army of the second half of the 16th - 17th century".
His Doctor of Science dissertation he defended in 1992 was on "The Ukrainian Cossack Army of the second half of the 16th - 17th century".
A professor of Kiev University (from 1996) where he is a director of the Centre of Ukrainian Studies (from 2000) Serhiychuk is an academician (full member) of the National Academy of Science of Ukraine. Serhiychuk researches problems in Ukrainian history, in particular the Ukrainian Cossacks, resettlement of Ukrainians throughout the world, the fate of national minorities in Ukraine, the activities of the Ukrainian Insurgent Army and the Organization of Ukrainian Nationalists, and the contributions of Ukrainians to world science and culture.
He defended his Candidate of Science dissertation titled ""People"s Army" in Ukraine in the period of the struggle for independence in 1648-1654 (the organization, munitions, supplies)" in 1982.