TY  - JOUR
AU  - Fernando Galván, José Francisco
AU  - Ruiz Sancho, Jesús María
AU  - Scheiderer, Claus
PY  - 2006
UR  - https://hdl.handle.net/20.500.14352/50666
T2  - UCM GT preprint
AB  - Let A = k[y] be the polynomial ring in one single variable y over a field k. We discuss the number of squares needed to represent sums of squares of linear forms with coefficients in the ring A. We use quaternions to obtain bounds when the Pythagoras...
LA  - eng
M2  - 1
KW  - Pythagoras number
KW  - Pfister bound
KW  - quaternions
TI  - Sums of squares of linear forms: the quaternions approach
TY  - journal article
ER  -