Jian Zheng

most citedSome TurÃ¡n-type results for the signless Laplacian spectral radius

1 citations · 1 across the 3 of their papers we have counts for

collaborators

5 papers

math.CO2026

Spectral extremal problems for the $(p, Q)$ -spectral radius of hypergraphs

Jian Zheng, Honghai Li, Li Su

Let $Q$ be an $s$ -vertex $r$ -uniform hypergraph, and let $H$ be an $n$ -vertex $r$ -uniform hypergraph. Denote by $N (Q, H)$ the number of isomorphic copies of $Q$ in $H$ . Fo…

math.CO2026

Spectral TurÃ¡n-type problems for the $I^\pm$ -spectral radius of hypergraphs with degree stability

Jian Zheng, Honghai Li, Li Su

An $r$ -pattern $P$ is an ordered pair $P = ([l], E)$ , where $l$ is a positive integer and $E$ is a set of $r$ -multisets with elements from $[l]$ . An $r$ -graph $H$ is said to be $P$ -co…

math.CO2026★ 1 cited

Some TurÃ¡n-type results for the signless Laplacian spectral radius

Jian Zheng, Yongtao Li, Yi-Zheng Fan

Half a century ago, BollobÃ¡s and ErdÅs [Bull. London Math. Soc. 5 (1973)] proved that every $n$ -vertex graph $G$ with $e (G) \geq (1 - \frac{1}{k} + ε) \frac{n ^{2}}{2}$ edges…

math.CO2025

A signless Laplacian spectral ErdÃ¶s-Stone-Simonovits theorem

Jian Zheng, Honghai Li, Li Su

The celebrated ErdÅs--Stone--Simonovits theorem states that $ex (n, F) = (1 - \frac{1}{I ¨ ( F ) - 1} + o (1)) \frac{n ^{2}}{2}$ , where $I ¨ (F)$ is the chromatic number of $F$ . I…

math.CO2025

The signless Laplacian spectral TurÃ¡n problems for color-critical graphs

Jian Zheng, Yongtao Li, Honghai Li

The well-known TurÃ¡n theorem states that if $G$ is an $n$ -vertex $K_{r + 1}$ -free graph, then $e (G) \leq e (T_{n, r})$ , with equality if and only if $G$ is the $r$ -partite TurÃ¡n graph…

Spectral extremal problems for the (p,Q)-spectral radius of hypergraphs

Spectral TurÃ¡n-type problems for the I^±-spectral radius of hypergraphs with degree stability

Some TurÃ¡n-type results for the signless Laplacian spectral radius

A signless Laplacian spectral ErdÃ¶s-Stone-Simonovits theorem

The signless Laplacian spectral TurÃ¡n problems for color-critical graphs

Spectral extremal problems for the $(p, Q)$ -spectral radius of hypergraphs

Spectral TurÃ¡n-type problems for the $I^\pm$ -spectral radius of hypergraphs with degree stability