Electronic Journal of Differential Equations,
Vol. 1997(1997), No. 21, pp 1-14.

Title: A spectral problem with an indefinite weight for an elliptic system
 
Author: Mamadou Sango (Univ. of the Witwatersrand, South Africa)

Abstract: 
We establish the completeness and the summability in the sense of
Abel-Lidskij  of the root vectors of a non-selfadjoint elliptic problem with
an indefinite weight matrix and the angular distribution of its eigenvalues.
 
Submitted September 18, 1997. Published November 29, 1997.
Math Subject Classification: 35P99, 35J55, 58G25.
Key Words: indefinite weight; completeness; summability; root vectors.