Author

Colin Defant

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Preprint Aug 2026

Proof of the Lyons--White Conjecture

Let $D_n$ be the dihedral group of order $2n$. Consider a continuous-time random walk on $D_n$ driven by arbitrary symmetric rates whose support generates $D_n$. For $p\in[1,\infty]$, we say the pair $(D_n,p)$ is rate-monotonic if for each fixed time $t$, the $\ell^p$-distance between the random walk's distribution at...

Colin Defant, Ken Ono · 0 citations

Preprint Aug 2026

Zero-free columns in character tables of symmetric groups

The rows and columns of the character table of the symmetric group $S_n$ are both naturally indexed by partitions of $n$. Let $D(n)$ denote the number of conjugacy classes of $S_n$ whose column contains no zero entry. The identity column is always zero-free, so $D(n)\geq 1$. It is known that $D(n)\ll n^2$. We prove tha...

Colin Defant, S. Hariharan, Kenny Lau et al. · 0 citations