2 papers
math.CO2003
Rayleigh Matroids
Y. -B. Choe, D. G. Wagner
Motivated by a property of linear resistive electrical networks, we introduce the class of Rayleigh matroids. This is a subclass of the balanced matroids introduced by Feder and Mi…
math.CO2002
Homogeneous multivariate polynomials with the half-plane property
Young-Bin Choe, James G. Oxley, Alan D. Sokal +1
A polynomial P in n complex variables is said to have the "half-plane property" (or Hurwitz property) if it is nonvanishing whenever all the variables lie in the open right half-pl…