Approximate groups and renormgroup symmetries

Document type: Monographs
Author(s): Nail H. Ibragimov, Vladimir Kovalev
Title: Approximate groups and renormgroup symmetries
Year: 2008
Pagination: 1-153
ISBN: 978-91-7295-980-4
Publisher: ALGA Publications
City: Karlskrona
Organization: Blekinge Institute of Technology
Department: School of Engineering - Dept. Mathematics and Science (Sektionen för teknik – avd. för matematik och naturvetenskap)
School of Engineering S- 371 79 Karlskrona
+46 455 38 50 00
Authors e-mail:
Language: English
Abstract: The book deals with so-called renormalization group symmetries considered in the framework of approximate transformation groups. Renormgroup symmetries provide a basis for the renormgroup algorithm for improving solutions to boundary value problems by converting "less applicable solutions" into "more applicable solutions". the algorithm is particularly useful for improving approximate solutions given by the perturbation theory.
Subject: Mathematics\General
Keywords: Lie group anlaysis, approximate symmetries, renorm groups