Sufficiency conjecture for multiplication profiles of hyperelliptic Jacobian point classes
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.
Sources & referencesView supporting material
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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