Asymptotic equality frequencies for Hilbert depths of path and cycle ideals

Let SS, InI_n, and JnJ_n be as above, and for each NN let #{nN:P(n)}\#\{n\leq N:\,P(n)\} denote the number of positive integers nNn\leq N satisfying P(n)P(n). Hilbert-depth frequency conjecture.

limN#{nN:hdepth(S/In)=hdepth(S/Jn)}N=23,\lim_{N\to\infty}\frac{\#\{n\leq N:\,\operatorname{hdepth}(S/I_n)=\operatorname{hdepth}(S/J_n)\}}{N}=\frac23,

and

limN#{nN:hdepth(In)=hdepth(Jn)}N=56.\lim_{N\to\infty}\frac{\#\{n\leq N:\,\operatorname{hdepth}(I_n)=\operatorname{hdepth}(J_n)\}}{N}=\frac56.

The source presents these limits as further proposals after reporting verification of the preceding conjecture for n1000n\leq 1000; no proof or disproof of either asymptotic assertion is reported.

Sources & referencesView supporting material

Primary source

Andreea I. Bordianu and Mircea Cimpoeas, “On the Stanley depth and Hilbert depth of some classes of edge ideals of graphs”, arXiv:2411.10844 (2024).

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