Abstract
Matching principles are the key of asymptotic analysis for singular perturbation problems. Starting with some classical definitions in asymptotics we recall the principal results which have been obtained to match asymptotic expansions of a singular function; these classical results are based on Kaplun's extension theorem. After Kaplun and Fraenkel, most of the results are from W. Eckhaus; in fact, he was the first to say clearly that matching is not actually a consequence of overlapping. Following all these ideas, we discuss some theorems and rules which involve matching and try to explore some new ideas with the help of simple examples and counter-examples.
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References
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Mauss, J. (1979). On matching principles. In: Verhulst, F. (eds) Asymptotic Analysis. Lecture Notes in Mathematics, vol 711. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0062944
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DOI: https://doi.org/10.1007/BFb0062944
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