Some remarks on an existence problem for degenerate elliptic systems

: Martio O., Miklyukov V., Vuorinen M.

: 2005

: Proceedings of the American Mathematical Society

: 133

: 5

: 1451

: 1458

: 8

: 0002-9939

DOI: https://doi.org/10.1090/S0002-9939-04-07695-6

: http://api.elsevier.com/content/abstract/scopus_id:18144418943

The system au + bu = v, cu + du = -v, which yields Beltrami's system if b = c, is considered. Under a condition for the coefficients a, b, c, d a non-existence theorem is proved. © 2004 American Mathematical Society.