182 citations
- University of PisaIT8 papers
- Institute for Chemical and Physical ProcessesIT4 papers
- Institute for Computational Linguistics “A. Zampolli”IT4 papers
- Tata Institute of Fundamental ResearchIN4 papers
- Benemérita Universidad Autónoma de PueblaMX3 papers
- Texas A&M UniversityUS3 papers
- Duke UniversityUS2 papers
- Heidelberg UniversityDE2 papers
- O.Ya. Usikov Institute for Radiophysics and ElectronicsUA2 papers
- Astronomy and SpaceAU1 paper
- Bariloche Atomic CentreAR1 paper
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math.CO2009
Graphs whose flow polynomials have only integral roots
Joseph P. S. Kung, Gordon F. Royle
We show if the flow polynomial of a bridgeless graph G has only integral roots, then G is the dual graph to a planar chordal graph. We also show that for 3-connected cubic graphs,…
math.CO2007
Lattice and Schroder paths with periodic boundaries
Joseph P. S. Kung, Anna de Mier, Xinyu Sun +1
We consider paths in the plane with and -steps that start at the origin, end at height and stay to the left of a given non-decreasing right boundary.…