TY  - JOUR
AU  - Fernando Galván, José Francisco
PY  - 2022
DO  - 10.1007/s13398-021-01202-4
SN  - 1578-7303
UR  - https://hdl.handle.net/20.500.14352/71539
T2  - Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A. Matemáticas
AB  - A classical problem in real geometry concerns the representation of positive semidefinite elements of a ring A as sums of squares of elements of A. If A is an excellent ring of dimension ≥3, it is already known that it contains positive semidefinite...
LA  - eng
PB  - Springer Nature
KW  - Real spectrum
KW  - Positive semidefinite elements
KW  - Sums of squares
KW  - Singularities
KW  - Excellent henselian ring
KW  - Dimension 2
KW  - Completion
TI  - Representation of positive semidefinite elements as sum of squares in 2-dimensional local rings
TY  - journal article
VL  - 116
ER  -