A unified approach to method for the simultaneous computation of all zeros of generalized polynomials (Q1098235)

We derive quadratically convergent methods for the simultaneous computation of all zeros of functions from a space satisfying a kind of Haar's condition. Our approach simplifies the convergence proofs for several methods from literature. It also produces a series of new methods, applicable to a larger class of generalized polynomials. Numerical examples are included.