Z. Miao

activity

20092026

collaborators

Showing 2023Show all

2 papers · 1 filter

math.CO2023

Signed circuit $6$ -covers of signed $K_{4}$ -minor-free graphs

You Lu, Rong Luo, Zhengke Miao +1

Bermond, Jackson and Jaeger [{\em J. Combin. Theory Ser. B} 35 (1983): 297-308] proved that every bridgeless ordinary graph $G$ has a circuit $4$ -cover and Fan [{\em J. Combin. The…

math.CO2023

The average degree of edge chromatic critical graphs with maximum degree seven

Yan Cao, Rong Luo, Zhengke Miao +1

In this paper, by developing several new adjacency lemmas about a path on $4$ or $5$ vertices, we show that the average degree of 7-critical graphs is at least 6. It implies Vizing…

Signed circuit 6-covers of signed K4​-minor-free graphs

The average degree of edge chromatic critical graphs with maximum degree seven

Signed circuit $6$ -covers of signed $K_{4}$ -minor-free graphs