TY  - JOUR
AU  - Fernando Galván, José Francisco
PY  - 2008
DO  - 10.4171/CMH/119
SN  - 0010-2571
UR  - https://hdl.handle.net/20.500.14352/49897
T2  - Commentarii Mathematici Helvetici
AB  - Among the invariant factors g of a positive semidefinite analytic function f on R-3, those g whose zero set Y is a curve are called special. We show that if each special g is a sum of squares of global meromorphic functions on a neighbourhood of Y,...
LA  - eng
M2  - 67
PB  - European Mathematical Society
KW  - Hilbert’s 17th Problem
KW  - Sum of squares
KW  - Irreducible factors
KW  - Special factors.
TI  - On Hilbert's 17th Problem for global analytic functions indimension 3.
TY  - journal article
VL  - 83
ER  -