RT Journal Article
T1 Positive semidefinite germs in real analytic surfaces.
A1 Fernando Galván, José Francisco
AB We find all real analytic surface germs in R3 on which every positive semidefinite function germ is a sum of squares (in fact, of two squares) of analytic function germs.
PB Springer
SN 0025-5831
YR 2002
FD 2002
LK https://hdl.handle.net/20.500.14352/57240
UL https://hdl.handle.net/20.500.14352/57240
LA eng
NO Fernando, J. Positive semidefinite germs in real analytic surfaces. Math Ann 322, 49–67 (2002). https://doi.org/10.1007/s002080100264
NO Ministerio de Educación y Ciencia (España)
DS Docta Complutense
RD 7 abr 2025