Author

Akhilesh Panchangam

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Preprint Oct 2026

Stronger Spectral Bound for Clique Number

Given an integer $k$, deciding whether a graph has a clique of size $k$ is an NP-complete problem. Wilf's inequality provides a spectral lower bound for the clique number of a graph. Strengthening this bound, Elphick and Wocjan proposed a conjecture in 2018 using positive adjacency eigenvalues. In this paper, we presen...

Hareshkumar Jadav, Sudipta Mallik, Akhilesh Panchangam et al. · 0 citations