Abstract:
We develop a constructive approach to the problem of describing affinely homogeneous real hypersurfaces in 3-dimensional complex space having nondegenerate sign-indefinite Levi form. We construct the affine invariants of a nondegenerate indefinite hypersurface in terms of second-order jets of its defining function and introduce the notion of the affine canonical equation of this surface. Three main types of canonical equations are considered. For each of these types, we construct a family of Lie algebras related to affinely homogeneous surfaces of a particular type. As a result, a family (depending on two real parameters) of affinely different homogeneous submanifolds of 3-dimensional complex space is presented (as matrix algebras).
Keywords:
affinely homogeneous indefinite hypersurface, complex space C3, Lie algebra, strictly pseudoconvex hypersurface, Levi form, Hermitian form, canonical equation of an indefinite surface.
Citation:
M. S. Danilov, A. V. Loboda, “Affine Homogeneity of Indefinite Real Hypersurfaces in the Space C3”, Mat. Zametki, 88:6 (2010), 867–884; Math. Notes, 88:6 (2010), 827–843
This publication is cited in the following 6 articles:
A. V. Loboda, “O razmernostyakh grupp affinnykh preobrazovanii, tranzitivno deistvuyuschikh
na veschestvennykh giperpoverkhnostyakh v C3”, Vestn. Volgogr. gos. un-ta. Ser. 1, Mat. Fiz., 2014, no. 4(23), 11–35
A. V. Loboda, V. K. Evchenko, “Various representations of matrix Lie algebras related to homogeneous surfaces”, Russian Math. (Iz. VUZ), 57:4 (2013), 35–51
T. T. D. Nguen, “Affine-Homogeneous Real Hypersurfaces of Tube Type in C3”, Math. Notes, 94:2 (2013), 238–254
A. V. Loboda, “Affinely Homogeneous Real Hypersurfaces of C2”, Funct. Anal. Appl., 47:2 (2013), 113–126
Nguen Tkhi Tkhyui Zyong, “Postroenie 5-mernykh matrichnykh algebr li s pomoschyu paketa maple”, Vestnik Voronezhskogo gosudarstvennogo universiteta. Seriya: Fizika. Matematika, 2012, no. 1, 162–162
A. V. Loboda, T. T. D. Nguyẽn, “On the affine homogeneity of tubular type surfaces in C3”, Proc. Steklov Inst. Math., 279 (2012), 93–109