Abstract
In this article we study some elliptic systems of partial differential equations in bounded domains generated by vector fields which degenerate on their boundaries, see also Citation[3] (Dzhuraev, A., 1999, Singular Partial Differential Equations (Boca Raton: Chapman & Hall/CRC)) and Citation[6] (Keldysh, M., 1951, On some cases of degeneracy of elliptic equations on the boundary of the domain. Doklady Academii Nauk SSSR, 77, 181–183 (Russian)).
Notes
Dedicated to Heinrich Begehr on his 65th birthday.