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math.RA2013★ 24 cited
Automorphisms of real Lie algebras of dimension five or less
David J Fisher, Robert J Gray, Peter E Hydon
The Lie algebra version of the Krull-Schmidt Theorem is formulated and proved. This leads to a method for constructing the automorphisms of a direct sum of Lie algebras from the au…
math.NA2013
Characteristics of conservation laws for difference equations
Timothy J. Grant, Peter E. Hydon
Each conservation law of a given partial differential equation is determined (up to equivalence) by a function known as the characteristic. This function is used to find conservati…