Sufficiency conjecture for multiplication profiles of hyperelliptic Jacobian point classes
Let ) be a hyperelliptic curve of genus , with a marked Weierstrass point , and let denote the relevant locus of point classes . A multiplication profile is a sequence recording the sizes of the supports of the -reductions of the multiples . Multiplication-profile sufficiency conjecture. Any sequence of non-negative integers satisfying the five listed conditions—namely and ; subadditivity ; the adjacent-difference and nonrepetition conditions; the prohibition on except when ; and the stated periodicity and symmetry after the first zero— is realized as the multiplication profile of some element for some hyperelliptic curve of genus . This would turn the necessary numerical conditions for multiplication profiles into a complete characterization, extending the paper's explicit classifications for cyclic covers and selected torsion orders. Whether every sequence satisfying these conditions is geometrically realizable remains open.
References
Primary source
Ethan Cotterill, Nathan Pflueger and Naizhen Zhang, “Weierstrass semigroups from cyclic covers of hyperelliptic curves”, arXiv:2201.00033 (2023).
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