Tropical Algebraic Geometry in Maple, a preprocessing algorithm for   finding common factors to multivariate polynomials with approximate   coefficients
  Finding a common factor of two multivariate polynomials with approximate coefficients is a problem in symbolic-numeric computing. Taking a tropical view on this problem leads to efficient preprocessing techniques, applying polyhedral methods on the exact exponents with numerical techniques on the approximate coefficients. With Maple we will illustrate our use of tropical algebraic geometry. 
Danko Adrovic and Jan Verschelde