Colombeau algebra Guide, Meaning , Facts, Information and Description

In mathematics, the Colombeau algebra is an algebra introduced with the aim of constructing an improved theory of distributions, in which multiplication is not problematic. It is defined as a quotient algebra

.

Here the moderate functions on Rⁿ are defined as

which are families f(x) of smooth functions on Rⁿ such that

and for all compact subsets K of Rⁿ and multiindices α we have N > 0, η > 0 and c > 0 such that for all ε > 0 with ε < η and x in K

The ideal

of negligible functions is defined in the same way but with the partial derivatives instead bounded by

cε ^N.

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