Publicaciones en colaboración con investigadores/as de Universidad Autónoma de Madrid (7)

2009

  1. On a global analytic Positivstellensatz

    Arkiv for Matematik, Vol. 47, Núm. 1, pp. 13-39

2006

  1. Polynomial and regular images of ℝn

    Israel Journal of Mathematics, Vol. 153, pp. 61-92

  2. Sums of squares of linear forms

    Mathematical Research Letters, Vol. 13, Núm. 5-6, pp. 947-956

2005

  1. Analytic surface germs with minimal Pythagoras number

    Mathematische Zeitschrift, Vol. 250, Núm. 4, pp. 967-969

  2. On the Pythagoras numbers of real analytic set germs

    Bulletin de la Societe Mathematique de France, Vol. 133, Núm. 3, pp. 349-362

  3. On the Pythagoras numbers of real analytic surfaces

    Annales Scientifiques de l'Ecole Normale Superieure, Vol. 38, Núm. 5, pp. 751-772

2004

  1. Some remarks on the computation of Pythagoras numbers of real irreducible algebroid curves through Gram matrices

    Journal of Algebra, Vol. 274, Núm. 1, pp. 64-67