Electronic Journal of Differential Equations,
Vol. 2014 (2014), No. 108, pp. 1-18.

Title: Well-posedness of boundary-value problems for partial differential
       equations of even order

Authors: Djumaklych Amanov (National Univ. Uzbekistan, Tashkent, Uzbekistan)
         Allaberen Ashyralyev (Fatih Univ. Istanbul, Turkey)

Abstract:
 In this article, we establish the well-posedness of two boundary
 value problems for 2k-th order partial differential equations.
 It is shown that the solvability of these problems
 depends on the evenness and oddness of the number k.

Submitted October 15, 2013. Published April 15, 2014.
Math Subject Classifications: 35G15.
Key Words: Boundary value problem; well-posedness; a priori estimate; 
           regular and strong solutions; spectrum of problems.