• Article  

      Positivity of basic sums of ultraspherical polynomials 

      Brown, G.; Koumandos, S.; Wang, K. -Y (1998)
      We determine the maximum range of A for the positivity of sums This result resolves a problem posed by Szegö thirty five years ago. © 2014, Oldenbourg Wissenschaftsverlag GmbH, Rosenheimer Str. 145, 81671 München. All ...
    • Article  

      Positivity of Cotes numbers at more Jacobi abscissas 

      Brown, G.; Koumandos, S.; Wang, K. -Y (1996)
      The positivity of certain finite sums of even ultraspherical polynomials has been identified by Askey as a specially interesting case of a more general problem concerning positivity of Cotes numbers at Jacobi abscissas. ...
    • Article  

      Positivity of more Jacobi polynomial sums 

      Brown, G.; Koumandos, S.; Wang, K. -Y (1996)