Liouvillian Solutions of Difference-Differential Equations (2008)
Feng, Ruyong, Singer, Michael F., Wu, Min
For a field k$with an automorphism \sigma and a derivation \delta, we introduce the notion of liouvillian solutions of linear difference-differential systems {\sigma(Y) = AY, \delta(Y) = BY} over k...
Rational General Solutions of Ordinary Difference Equations 1) (2005)
Ruyong Feng, Xiao-shan Gao, Zhenyu Huang
Abstract. In this paper, we generalize the results in [9] to ordinary difference equations (O∆Es). We give an equivalent condition for an O∆E to have a rational type general solution. For the...