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Comment
. 2006 Apr;73(4 Pt 2):048701.
doi: 10.1103/PhysRevE.73.048701. Epub 2006 Apr 18.

Comment on "Structure of positive decompositions of exponential operators"

Sergio Blanes  1 , Fernando Casas
Affiliations
Comment

Comment on "Structure of positive decompositions of exponential operators"

Sergio Blanes et al. Phys Rev E Stat Nonlin Soft Matter Phys. 2006 Apr.

Abstract

An elementary proof is shown on the necessary existence of negative coefficients in splitting methods of order p > or = 3.

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