Colombeau algebra

Colombeau algebra, often referred to as "Colombeau's algebra" or simply "algebra of generalized functions," is a mathematical framework originally developed by Alain Colombeau in the 1980s to rigorously handle distributions (generalized functions) in the context of multiplication and other operations that are not well-defined in the classical theory of distributions. In classical distribution theory, certain products of distributions, particularly products involving singular distributions (like the Dirac delta function), are not well-defined.