Classification of four-dimensional transitive local Lie groups of transformations of R 4 and their two-point invariants

2008 ◽  
Vol 52 (6) ◽  
pp. 25-36
Author(s):  
V. A. Kyrov
1994 ◽  
Vol 05 (04) ◽  
pp. 723-734 ◽  
Author(s):  
V.A. DORODNITSYN

The present paper is concerned with continuous groups of transformations in a space of discrete variables. The criterion of invariance of difference equations together with difference grid is discussed. One simple method to construct finite-difference equations and grids entirely inheriting admitted Lie groups of transformations of initial differential models is developed.


Author(s):  
Pierre-Alain Cherix ◽  
Michael Cowling ◽  
Alain Valette
Keyword(s):  

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