.LTF

.LTF file extension

This is the basic program to work with .LTF extension

LINGO

LINGO LINGO Document

LINGO is a comprehensive tool for building and solving linear, nonlinear (convex & nonconvex/global), quadratic, quadratically constrained, second order cone, semi-definite, stochastic, and integer optimization models. It comes with a programming language for expressing optimization models, a full featured environment for building and editing problems, and a set of fast built-in solvers... (more)

The program works with the following extensions: lng, ldt, ltx, lrp and ltf