Evgenii Georgievich D'yakonov (Russian: ??????? ?????????? ????????) (July 2, 1935 ā August 11, 2006) was a Russian mathematician.
D'yakonov was a Ph.D.
student of Sergei Sobolev.
He worked at the Moscow State University.
He authored over hundred papers and several books.
D'yakonov was recognized for his pioneering work in the 60sā80s on efficient spectrally equivalent preconditioning for linear systems and eigenvalue problems.
In the last decade, strengthened Sobolev spaces became D'yakonov's main topic of research, e.g., (D'yakonov, 2004).