Arithmetic kei coloring average-order conjecture

Let nNn\in\mathbb{N} be squarefree, let K\mathscr{K} be a finite kei, and define

colK(n)=HomKeicont(kein,K)\operatorname{col}_{\mathscr{K}}(n)=\left|\operatorname{Hom}_{\mathscr{K}\operatorname{ei}}^{\operatorname{cont}}(\mathord{\text{kei}}_n,\mathscr{K})\right|

to be the number of continuous K\mathscr{K}-colorings of the arithmetic kei of nn. For X1X\geq 1, let

AvgK(X)=1nX, n squarefreecolK(n)1nX, n squarefree1.\operatorname{Avg}_{\mathscr{K}}(X)=\frac{\sum_{1\leq n\leq X,\ n\ \mathrm{squarefree}}\operatorname{col}_{\mathscr{K}}(n)}{\sum_{1\leq n\leq X,\ n\ \mathrm{squarefree}}1}.

Arithmetic kei coloring average-order conjecture. Let KKei\mathscr{K}\in\mathscr{K}\operatorname{ei} be finite. Then there exists aK>0a_{\mathscr{K}}>0 such that

AvgK(X)=aKlogdegPK(X)(1+o(1))\operatorname{Avg}_{\mathscr{K}}(X)=a_{\mathscr{K}}\log^{\deg P_{\mathscr{K}}}(X)\cdot(1+o(1))

as XX\to\infty, where PKP_{\mathscr{K}} is the integer-valued polynomial governing the average number of K\mathscr{K}-colorings of random braid closures. This is motivated by the polynomial average for random braid closures and the analogy between squarefree integers and braid closures; the asserted asymptotic for arithmetic kei colorings remains open.

Sources & referencesView supporting material

Primary source

Ariel Davis and Tomer M Schlank, “Arithmetic Kei Theory”, arXiv:2408.05489 (2024).

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