Stability of initial Betti numbers for S^e(m,m+1)

Fix the multiplicity ee. Betti-number stability conjecture. For every m4m\geq 4, the Betti numbers of Se(m,m+1)S^e(m,m+1) and Se(m+1,m+2)S^e(m+1,m+2) agree through the indicated range; equivalently, for every nmn\geq m,

βj(n,n+1)=βj(m,m+1)for all jm3.\beta_j(n,n+1)=\beta_j(m,m+1)\quad\text{for all }j\leq m-3.

Thus the first m3m-3 Betti numbers are predicted to be independent of nn along this family; the supplied text gives no resolution status.

Sources & referencesView supporting material

Primary source

Kriti Goel, Nil Şahin, Srishti Singh and Hema Srinivasan, “Numerical Semigroups of Sally Type II”, arXiv:2512.10812 (2025).

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