Are there any good libraries in c++ for sequential nonlinear optimization with constraints? I am looking for inequality constraints and/or upper and lower bounds. There is a stackoverflow questio...

I have a non-linear optimization problem with constraints. It can be solved in Microsoft Excel with the Solver add-in, but I am having trouble replicating that in C#. My problem is shown in the fo...

I am looking for a C# implementation of both Gauss Newton & Levenberg Marquardt algorithms. Is there any "trustee" C# library out there already?

Is there an algorithm to check if a given (possibly nonlinear) function f is always positive? The idea that I currently have is to find the roots of the function (using newton-raphson algorithm or...

I would like to know if there is a package in R handling non linear integer optimization. "Basically", I would like to solve the following problem: max f(x) s.t x in (0,10) and x is integer. I k...

I have a few inequalities regarding {x,y}, that satisfies the following equations: x>=0 y>=0 f(x,y)=x^2+y^2>=100 g(x,y)=x^2+y^2<=200 Note that x and y must be integer. Graphically i...

I'm looking for a non-linear curve fitting routine (probably most likely to be found in R or Python, but I'm open to other languages) which would take x,y data and fit a curve to it. I should be a...