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math.CO2021
Weighted Subspace Designs from -Polymatroids
Eimear Byrne, Michela Ceria, Sorina Ionica +1
The Assmus-Mattson theorem gives a way to identify block designs arising from codes. This result was broadened to matroids and weighted designs. In this work we present a further t…
math.NT2021
Isogenous hyperelliptic and non-hyperelliptic Jacobians with maximal complex multiplication
Bogdan Dina, Sorina Ionica, Jeroen Sijsling
We analyze complex multiplication for Jacobians of curves of genus 3, as well as the resulting Shimura class groups and their subgroups corresponding to Galois conjugation over the…