3 papers
math.CO2026
A Sharp Matching-Number Threshold for Spectral-Walk Determination of Trees
Chaochao Zhu
The spectral characterization of graphs is a central problem in spectral graph theory. In this paper we study when a tree is determined, among trees, by its generalized spectrum. W…
math.CO2025
Single-exponential bounds for diagonals of D-finite power series
Shaoshi Chen, Frédéric Chyzak, Pingchuan Ma +1
D-finite power series appear ubiquitously in combinatorics, number theory, and mathematical physics. They satisfy systems of linear partial differential equations whose solution sp…
cs.SC2019
On the Existence of Telescopers for Rational Functions in Three Variables
Shaoshi Chen, Lixin Du, Rong-Hua Wang +1
Zeilberger's method of creative telescoping is crucial for the computer-generated proofs of combinatorial and special-function identities. Telescopers are linear differential or ($…