Xiaogang Li

collaborators

4 papers

math.GR2026

A classification of regular maps with Euler characteristic $- pq$

Xiaogang Li, Yao Tian

In this paper, we give a classification of regular maps with Euler characteristic $- pq$ for distinct primes $q > p \geq 5$ . This together with previous classification of regular maps…

math.GR2026

A classification of regular maps with Euler characteristic $- p^{4}$ for a prime $p \geq 5$

Xiaogang Li, Yao Tian

A map is a cellular decomposition of a closed surface. In the framework of classifying all regular maps by their supporting surface, it is an open problem to find all closed surfac…

math.CO2022

Orientably-Regular $π$ -Maps and Regular $π$ -Maps

Xiaogang Li, Yao Tian

Given a map with underlying graph $G$ , if the set of prime divisors of $∣ V (G ∣$ is denoted by $π$ , then we call the map a {\it $π$ -map}. An orientably-regular (r…

math.CO2022

Orientably-Regular $p$ -Maps and Regular $p$ -Maps

Shaofei Du, Yao Tian, Xiaogang Li

A map is called a {\it $p$ -map} if it has a prime $p$ -power vertices. An orientably-regular (resp. A regular ) $p$ -map is called {\it solvable} if the group $G^{+}$ of all orientatio…

A classification of regular maps with Euler characteristic −pq

A classification of regular maps with Euler characteristic −p4 for a prime p≥5

Orientably-Regular π-Maps and Regular π-Maps

Orientably-Regular p-Maps and Regular p-Maps

A classification of regular maps with Euler characteristic $- pq$

A classification of regular maps with Euler characteristic $- p^{4}$ for a prime $p \geq 5$

Orientably-Regular $π$ -Maps and Regular $π$ -Maps

Orientably-Regular $p$ -Maps and Regular $p$ -Maps