Asymptotic-limit conjecture for expected Betti numbers of preferential attachment clique complexes

For q2q\geq 2 and m2qm\geq 2q, let X(T,δ,m)X(T,\delta,m) denote the affine preferential attachment clique complex and let βq(X(T,δ,m))\beta_q(X(T,\delta,m)) be its qq-th Betti number. If 12qχ(δ,m)>01-2q\chi(\delta,m)>0, the asymptotic-limit conjecture. The limit

limTE[βq(X(T,δ,m))]T12qχ(δ,m)\lim_{T\to\infty}\frac{E[\beta_q(X(T,\delta,m))]}{T^{1-2q\chi(\delta,m)}}

exists. The conjecture seeks a sharper asymptotic description than the estimates established in the paper; the supplied text gives no resolution.

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Primary source

Chunyin Siu, Gennady Samorodnitsky, Christina Lee Yu and Rongyi He, “The Asymptotics of the Expected Betti Numbers of Preferential Attachment Clique Complexes”, arXiv:2305.11259 (2024).

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