activity
20242026
most citedLongest cycles and longest chordless cycles in -connected graphs

1 citations · 1 across the 14 of their papers we have counts for

collaborators
Showing 2026Show all

6 papers · 1 filter

math.CO2026

Every fork-free graph is perfectly weight divisible

Feng Liu, Shuang Sun, Yan Wang +2

A graph is \emph{perfectly weight divisible} if, for every positive integral weight function on and every induced subgraph of with at least one edge, the vertex…

math.CO2026

Optimal coloring of -free graphs with no short odd holes

Feng Liu, Shuang Sun, Yan Wang

A \emph{hole} is an induced cycle of length at least four, and an \emph{even hole} is a hole of even length. A \emph{cap} is obtained from a hole by adding a vertex adjacent to exa…

math.CO2026

Edge-disjoint Hamilton cycles under a bipartite-hole condition

Yanan Hu, Chengli Li, Feng Liu

In 2017, McDiarmid and Yolov introduced the bipartite-hole-number and proved that forces a Hamilton cycle. They also gave a sufficient con…

math.CO2026

Tight Bound for Nikiforov's Spectral Even-Cycle Conjecture

Peiru Kuang, Feng Liu, Shuang Sun +2

Nikiforov conjectured that, for every fixed and all sufficiently large , the unique -vertex -free graph with maximum adjacency spectral radius is $S^+_{n,k}…

math.CO2026

On the structures of {diamond, bowtie}-free graphs that do not contain an induced subdivision of

Feng Liu, Shuang Sun, Yan Wang

A graph is -free if it contains no induced subdivision of . Lévêque et al. [\emph{J. Combin. Theory Ser. B} \textbf{102} (2012) 924--947] conjectured that all…

math.CO2026

On the Borodin--Kostochka conjecture for graphs with large maximum degree

Feng Liu, Shuang Sun, Yan Wang +1

The Borodin--Kostochka conjecture states that every graph with maximum degree satisfies . In this paper, we verify this conjecture for…