TY  - JOUR
AU  - Acquistapace, Francesca
AU  - Broglia,  Fabrizio
AU  - Fernando Galván, José Francisco
AU  - Ruiz Sancho, Jesús María
PY  - 2010
SN  - 0037-9484
UR  - https://hdl.handle.net/20.500.14352/42160
T2  - Bulletin de la Société Mathématique de France
AB  - We consider the 17(th) Hilbert Problem for global real analytic functions in a modified form that involves infinite sums of squares. Then we prove a local-global principle for a real global analytic function to be a sum of squares of global real...
M2  - 231
PB  - French Mathematical Society
KW  - 17th Hilbert problem
KW  - Pythagoras number
KW  - Sum of squares
KW  - Bad set
KW  - Germs
TI  - On the finiteness of Pythagoras numbers of real meromorphic functions.
TY  - journal article
VL  - 138
ER  -