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math-ph2005
Renormgroup symmetry for solution functionals
D. V. Shirkov, V. F. Kovalev
The paper contains generalization of the renormgroup algorithm for boundary value problems of mathematical physics and related concept of the renormgroup symmetry, formulated earli…
math-ph2001
Symmetries of Integro-Differential Equations: A Survey of Methods Illustrated by the Benney Equations
N. H. Ibragimov, V. F. Kovalev, V. V. Pustovalov
Classical Lie group theory provides a universal tool for calculating symmetry groups for systems of differential equations. However Lie's method is not as much effective in the cas…