Evgenii Georgievich Dyakonov (Russian: Евгений Георгиевич Дьяконов) (July 2, 1935 – August 11, 2006) was a Russian mathematician.

Dyakonov was a Ph.D. student of Sergei Sobolev. He worked at the Moscow State University. He authored over hundred papers and several books. Dyakonov was recognized for his pioneering work in the 60s–80s on efficient spectrally equivalent preconditioning for linear systems and eigenvalue problems. In the last decade, strengthened Sobolev spaces became Dyakonov's main topic of research, e.g., (Dyakonov, 2004).

Dyakonov, E.G. (1996). Optimization in solving elliptic problems. CRC-Press. pp. 592. ISBN 978-0-8493-2872-5.

Dyakonov, E.G. (2004), "On spectral problems in energy spaces on composite manifolds with singular geometry of the blocks: I", Differential Equations, 4 (7): 934–946, doi:10.1023/B:DIEQ.0000047024.18841.44, S2CID 195368332

• Evgenii D'yakonov — scientific works on the website Math-Net.Ru
• Yevgeny Dyakonov at zbMATH
• Yevgeny Dyakonov at the Mathematics Genealogy Project
• NA Digest, V. 06, # 33 obituary on NA Digest by Andrew Knyazev.

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