Proper noun
Kovtun (plural Kovtuns)
A transliteration of the Ukrainian surname Ковтун (Kovtun).
Kovtun, Son, and Starinets 2001 By applying the AdS/CFT correspondence, Sơn and his collaborators were able to describe the quark gluon plasma in terms of black holes in five-dimensional spacetime. Source: Internet
Two Russian men, Andrei Lugovoi and Dmitry Kovtun, have been accused of his murder, but Russia has refused to extradite them to face trial in the UK. Source: Internet
The toe loop above belongs to Russian skater Maxim Kovtun. Source: Internet