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Yuejian Peng

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Open access Aug 2026

The Maximum Number of Triangles in Graphs Without Cycles of Length 0mod5

For a graph and a graph family , let denote the maximum number of copies of in an ‐free ‐vertex graph. Let . Bai, Tompkins, and Well conjectured that is attained if and each block of the graph is a . In this paper, we determine the exact value of and the extremal graphs for all . The novelty of our proof is to give a...

Xiaojun Zhao, Yuejian Peng · Journal of Graph Theory · 2 citations