Threshold conjecture for Laguerre inequalities and determinant positivity of partition-function differences

Let p(n)p(n) and pˉ(n)\bar{p}(n) denote the partition functions considered in the paper, and let Δk\Delta^k denote their kk-th finite differences. For 1m111\leq m\leq 11 and 1k51\leq k\leq 5, write Lp(k,m)L_p(k,m), Lpˉ(k,m)L_{\bar{p}}(k,m), Dp(k,m)D_p(k,m), and Dpˉ(k,m)D_{\bar{p}}(k,m) for the proposed threshold functions.

Threshold conjecture. For 1m111\leq m\leq 11 and 1k51\leq k\leq 5, Δkp(n)\Delta^k p(n), respectively Δkpˉ(n)\Delta^k\bar{p}(n), satisfies the Laguerre inequality of order mm whenever nLp(k,m)n\geq L_p(k,m), respectively nLpˉ(k,m)n\geq L_{\bar{p}}(k,m). The mm-th order determinants of Δkp(n)\Delta^k p(n), respectively Δkpˉ(n)\Delta^k\bar{p}(n), are positive whenever nDp(k,m)n\geq D_p(k,m), respectively nDpˉ(k,m)n\geq D_{\bar{p}}(k,m), except when both k3k\geq 3 and mm are odd.

These assertions propose explicit thresholds for higher-order inequalities of finite differences of the partition functions. The source presents the thresholds in tables; their general validity is conjectural, and the exceptional parity range is part of the stated claim.

Sources & referencesView supporting material

Primary source

Eve Y. Y. Yang, “Laguerre inequalities and determinantal inequalities for the finite difference of the partition functions”, arXiv:2312.10909 (2023).

Progress summary

Never refreshed

Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.

Solutions 0

No solutions have been posted yet.