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math.CO2021
Express the number of spanning trees in term of degrees
Fengming Dong, Jun Ge, Zhangdong Ouyang
It is well-known that the number of spanning trees, denoted by , in a connected multi-graph can be calculated by the Matrix-Tree theorem and Tutte's deletion-contraction…
math.CV2021
Schwarz-Pick and Landau type theorems for solutions to the Dirichlet-Neumann problem in the unit disk
Peijin Li, Qinghong Luo, Saminathan Ponnusamy
The aim of this paper is to establish some properties of solutions to the Dirichlet-Neumann problem: in the unit disc $\ID$, and…