26 citations · 38 across the 15 of their papers we have counts for
16 papers
Parallel Summation in P-Recursive Extensions
Shaoshi Chen, Ruyong Feng, Manuel Kauers +1
We propose investigating a summation analog of the paradigm for parallel integration. We make some first steps towards an indefinite summation method applicable to summands that ra…
Stability Problems on D-finite Functions
Shaoshi Chen, Ruyong Feng, Zewang Guo +1
This paper continues the studies of symbolic integration by focusing on the stability problems on D-finite functions. We introduce the notion of stability index in order to investi…
Galois Groups of Linear Difference-Differential Equations
Ruyong Feng, Wei Lu
We study the relation between the Galois group of a linear difference-differential system and two classes and of groups that are the Galois grou…
Differential Galois groups, specializations and Matzat's conjecture
Ruyong Feng, Michael Wibmer
We study families of linear differential equations parametrized by an algebraic variety and show that the set of all points , such that the differen…
Quasi-equivalence of heights in algebraic function fields of one variable
Ruyong Feng, Shuang Feng, Li-Yong Shen
For points on an algebraic curve over a field with height , the asymptotic relation between and has been extensively s…
Separability Problems in Creative Telescoping
Shaoshi Chen, Ruyong Feng, Pingchuan Ma +1
For given multivariate functions specified by algebraic, differential or difference equations, the separability problem is to decide whether they satisfy linear differential or dif…