RT Journal Article
T1 Analytic surface germs with minimal Pythagoras number
A1 Fernando Galván, José Francisco
AB We determine all complete intersection surface germs whose Pythagoras number is 2, and find that they are all embedded in R-3 and have the property that every positive semidefinite analytic function germ is a sum of squares of analytic function germs. In addition, we discuss completely these properties for mixed surface germs in R-3. Finally, we find in higher embedding dimension three different families with these same properties.
PB Springer
SN 0025-5874
YR 2003
FD 2003
LK https://hdl.handle.net/20.500.14352/57236
UL https://hdl.handle.net/20.500.14352/57236
LA eng
NO Erratum: Analytic surface germs with minimal Pythagoras number.Mathematische Zeitschrift. 250(2005)no. 4, 967-969
NO DGICYT
DS Docta Complutense
RD 6 abr 2025