Diierential Equations, Nested Forms and Star Products
نویسنده
چکیده
This presentation is in two parts. First, we recall the deenition of two types of asymptotic expansions known as nested form and nested expansions. This theory makes it possible to adapt the asymptotic scale to the function under expansion and is based on the theory of Hardy elds 1]. Next, we suggest a reformulation of nested forms in terms of generalized products called star products, and a prospective theory of multivariate Hardy elds called
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