Zhejiang Normal University

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20052026

most citedTunable optical properties of multilayers black phosphorus thin films

727 citations

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Showing 2014 · math.COShow all

4 papers · 2 filters

math.CO2014★ 2 cited

Coloring, sparseness, and girth

Noga Alon, Alexandr Kostochka, Benjamin Reiniger +2

An $r$ -augmented tree is a rooted tree plus $r$ edges added from each leaf to ancestors. For $d, g, r \in N$ , we construct a bipartite $r$ -augmented complete $d$ -ary tree havi…

math.CO2014

The spectra and the signless Laplacian spectra of graphs with pockets

Shu-Yu Cui, Gui-Xian Tian

Let $G [F, V_{k}, H_{v}]$ be the graph with $k$ pockets, where $F$ is a simple graph of order $n \geq 1$ , $V_{k} = {v_{1}, \dots, v_{k}}$ is a subset of the vertex set of $F$ and $H_{v}$ is a simple…

math.CO2014

Cross-intersecting families of vectors

János Pach, Gábor Tardos

Given a sequence of positive integers $p = (p_{1}, ..., p_{n})$ , let $S_{p}$ denote the family of all sequences of positive integers $x = (x_{1}, ..., x_{n})$ such that $x_{i} \leq p_{i}$ for all…

math.CO2014★ 2 cited

The Q-generating function for graphs with application

Shu-Yu Cui, Gui-Xian Tian

For a simple connected graph $G$ , the $Q$ -generating function of the numbers $N_{k}$ of semi-edge walks of length $k$ in $G$ is defined by $W_Q(t)=\sum\nolimits_{k = 0}^\infty {N_k t…