Sabir Medgidovich Gusein-Zade (Russian: Сабир Меджидович Гусейн-Заде; born 29 July 1950 in Moscow[1]) is a Russian mathematician and a specialist in singularity theory and its applications.[2]
Gusein-Zade co-authored with V. I. Arnold and A. N. Varchenko the textbook Singularities of Differentiable Maps (published in English by Birkhäuser).[2]
^ abcArtemov, S. B.; Belavin, A. A.; Buchstaber, V. M.; Esterov, A. I.; Feigin, B. L.; Ginzburg, V. A.; Gorsky, E. A.; Ilyashenko, Yu. S.; Kirillov, A. A.; Khovanskii, A. G.; Lando, S. K.; Margulis, G. A.; Neretin, Yu. A.; Novikov, S. P.; Shlosman, S. B.; Sossinsky, A. B.; Tsfasman, M. A.; Varchenko, A. N.; Vassiliev, V. A.; Vlăduţ, S. G. (2010), "Sabir Medgidovich Gusein-Zade", Moscow Mathematical Journal, 10 (4).
^Editorial Board (2011), "Sabir Gusein-Zade – 60"(PDF), Anniversaries, TWMS Journal of Pure and Applied Mathematics, 2 (1): 161.
^Wall, C. T. C. (2004), Singular Points of Plane Curves, London Mathematical Society Student Texts, vol. 63, Cambridge University Press, Cambridge, p. 152, doi:10.1017/CBO9780511617560, ISBN978-0-521-83904-4, MR2107253, An important result, due independently to A'Campo and Gusein-Zade, asserts that every plane curve singularity is equisingular to one defined over and admitting a real morsification with only 3 critical values.
^Rieger, J. H.; Ruas, M. A. S. (2005), "M-deformations of -simple -germs from to ", Mathematical Proceedings of the Cambridge Philosophical Society, 139 (2): 333–349, doi:10.1017/S0305004105008625, MR2168091, S2CID94870364, For map-germs very little is known about the existence of M-deformations beyond the classical result by A'Campo and Gusein–Zade that plane curve-germs always have M-deformations.