Geodesic
On Non-Point Invertible Transformations of Difference and Differential-Difference Equations
Symmetry, integrability and geometry: methods and applications, Tome 6 (2010) Cet article a éte moissonné depuis la source Math-Net.Ru

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Non-point invertible transformations are completely described for difference equations on the quad-graph and for their differential-difference analogues. As an illustration, these transformations are used to construct new examples of integrable equations and autotransformations of the Hietarinta equation.
Keywords: non-point transformation; Darboux integrability; discrete Liouville equation; higher symmetry. 
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     author = {Sergey Ya. Startsev},
     title = {On {Non-Point} {Invertible} {Transformations} of {Difference} and {Differential-Difference} {Equations}},
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     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2010_6_a91/}
}
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Sergey Ya. Startsev. On Non-Point Invertible Transformations of Difference and Differential-Difference Equations. Symmetry, integrability and geometry: methods and applications, Tome 6 (2010). http://geodesic.mathdoc.fr/item/SIGMA_2010_6_a91/

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