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Applied Topology

Ziqin Feng (virtual)

Subevent of Applied Topology - Sat. PM

Forbes 1022

Eastern Time (US & Canada)

Starts at: 2025-03-08 03:35PM

Ends at: 2025-03-08 03:55PM

Independence Complexes of Kneser Graphs

Ziqin Feng ⟨zzf0006@auburn.edu⟩

Abstract:

We will discuss the topological properties of the independence complex of Kneser graphs, Ind(KG$(n, k))$, with $n\geq 3$ and $k\geq 1$. By identifying one kind of maximal simplices through projective planes, we obtain homology generators for the $6$-dimensional homology of the complex Ind(KG$(3, k))$. Using cross-polytopal generators, we provide lower bounds for the rank of $p$-dimensional homology of the complex Ind(KG$(n, k))$ where $p=1/2\cdot {2n+k\choose 2n}$.

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