Computer algebra systems such as Maple and Mathematica include numerical equation
solvers such as
fsolve
and
NSolve. However, it seems that existing equation solvers are limited because they
do not return all solutions and they are not guaranteed to find a solution if one
exists. Outside of polynomial systems, symbolic equation solving algorithms
of such systems seem to be in even worse shape. Published numerical algorithms
like Brent[2]
start out with local assumptions about equations
We seek a more global approach which is guaranteed to find all solutions of an equation
Although "nonlinear equation" in general has a very broad meaning (see Saaty[15]), in this paper a nonlinear equation is an equation
and at the same time offering a guarantee that we have found all the solutions. |