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math.CO2026

A note on the saturation number for unions of three cliques

Hanlai Lin, Zhen He, Yiduo Xu

A graph is -saturated if contains no copy of but contains a copy of for every missing edge of . The saturation number $\sat(n,F)$ is the minimum num…

math.CO2026

All minimum -saturated multipartite graphs

Yiduo Xu, Zhen He, Mei Lu +1

A subgraph of is said to be -saturated relative to , if does not contain any copy of , but the addition of any edge in would create a…

math.CO2026

Degree-restricted semi-saturation numbers of cliques and its applications

Zhen He, Mei Lu, Yanzhe Qiu +1

A graph is said to be -semi-saturated if the addition of any nonedge would create a new copy of in . The semi-saturation number is the…

math.CO2025

The saturation number of wheels

Yanzhe Qiu, Zhen He, Mei Lu +1

A graph is said to be -free, if does not contain any copy of . is said to be -semi-saturated, if the addition of any nonedge would create a n…

math.CO2025

The Rainbow Saturation Number of Cycles

Yiduo Xu, Zhen He, Mei Lu

An edge-colored graph is -rainbow saturated if it contains no rainbow copy of , but adding any nonedge in any prescribed color creates one. The rainbow satur…

math.CO2024

Partite saturation number of cycles

Yiduo Xu, Zhen He, Mei Lu

A graph is said to be -saturated relative to , if does not contain any copy of , but the addition of any edge in would create a copy of $…