Xiumei Wang

collaborators

3 papers

math.CO2025

The spectral radii and extremal graphs of two types of minimal graphs

Liwen Lian, Jinfeng Liu, Mengyuan Niu +1

A connected nontrivial graph $G$ is {\it matching covered} if every edge of $G$ is contained in some perfect matching of $G$ . A matching covered graph $G$ is {\it minimal} if $G - e$ …

math.CO2025

Claw-free bricks that every $b$ -invariant edge is solitary

Yipei Zhang, Xiumei Wang

A graph $G$ is a brick if it is 3-connected and $G - {u, v}$ has a perfect matching for any two distinct vertices $u$ and $v$ of $G$ . Lucchesi and Murty proposed a problem concernin…

math.CO2025

Solid bricks that every $b$ -invariant edge is solitary

Yipei Zhang, Xiumei Wang

A graph $G$ is a brick if it is 3-connected and $G - {u, v}$ has a perfect matching for any two distinct vertices $u$ and $v$ of $G$ . A brick $G$ is solid if for any two vertex disj…

The spectral radii and extremal graphs of two types of minimal graphs

Claw-free bricks that every b-invariant edge is solitary

Solid bricks that every b-invariant edge is solitary

Claw-free bricks that every $b$ -invariant edge is solitary

Solid bricks that every $b$ -invariant edge is solitary