Pure and Applied Mathematics Quarterly

Volume 18 (2022)

Number 6

Special issue in honor of Fan Chung

Guest editors: Paul Horn, Yong Lin, and Linyuan Lu

Contents

Preface

Paul Horn, Yong Lin, and Linyuan Lu

pp. 2337-2338

Eigenvalue sum estimates for lattice subgraphs

Frank Bauer and Gabor Lippner

pp. 2339-2353

Spectral extremal results on the $\alpha$-index of graphs without minors and star forests

Ming-Zhu Chen, A-Ming Liu, and Xiao-Dong Zhang

pp. 2355-2378

The Lagrangian density of the disjoint union of a $3$-uniform tight path and a matching and the Turán number of its extension

Pingge Chen, Jinhua Liang, and Yuejian Peng

pp. 2379-2411

Which graphs can be counted in C4-free graphs?

David Conlon, Jacob Fox, Benny Sudakov, and Yufei Zhao

pp. 2413-2432

Geometric vs algebraic nullity for hyperpaths

Joshua Cooper and Grant Fickes

pp. 2433-2460

A greedy algorithm for the connected positive influence dominating set in $k$-regular graphs

Mengmeng He, Bo Hou, Wen Liu, Weili Wu, Ding-Zhu Du, and Suogang Gao

pp. 2461-2478

$3$-reconstructibility of rooted trees

Alexandr V. Kostochka, Mina Nahvi, Douglas B. West, and Dara Zirlin

pp. 2479-2509

Ricci-flat $5$-regular graphs

Heidi Lei and Shuliang Bai

pp. 2511-2535

Quasi-random graphs of given density and Ramsey numbers

Qizhong Lin and Yusheng Li

pp. 2537-2549

An alternative proof of general factor structure theorem

Hongliang Lu and Qinglin Yu

pp. 2551-2568

Concentration inequalities in spaces of random configurations with positive Ricci curvatures

Linyuan Lu and Zhiyu Wang

pp. 2569-2598

Singular Turán numbers of stars

Gaoxing Sun, Heng Li, Qinghou Zeng, and Jianfeng Hou

pp. 2599-2618

On the generalized shuffle-exchange problem

Xiaoming Sun, Yuan Sun, Kewen Wu, and Zhiyu Xia

pp. 2619-2645