Relaxation (approximation)

Relaxation, in the context of approximation, refers to techniques used to simplify a problem in order to make it more tractable, especially in optimization, physics, and computational mathematics. It typically involves relaxing certain constraints or conditions of the original problem to create a modified version that is easier to solve. The key idea is to find a balance between obtaining a solution that is as close as possible to the original problem while ensuring computational feasibility.