Literature cited
V. A. Malovichko, “On a boundary-value for a sixth-order equation with a nonnegative characteristic form,” Mat. Fiz., No. 31, 96–99 (1982).
V. A. Malovichko, “On the first boundary-value problem for a fourth-order differential equation,” Sib. Mat. Zh.,34, No. 1, 125–129 (1983).
V. A. Malovichko, “The first boundary-value problem for a fourth-order equation with nonnegative characteristic form,” Differents. Uravn.,19, No. 4, 712–714 (1983).
Yu. M. Berezanskii, Expansions in Eigenfunction of Self-Adjoint Operators [in Russian], Naukova Dumka, Kiev (1965).
Author information
Authors and Affiliations
Additional information
Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 39, No. 6, 791–793, November–December, 1987.
Rights and permissions
About this article
Cite this article
Malovichko, V.A. Theory of sixth-order equations of mixed type. Ukr Math J 39, 646–647 (1987). https://doi.org/10.1007/BF01062899
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF01062899