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most citedACM sets of points in multiprojective space

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math.AC2002

Fat Points in P^1 x P^1 and their Hilbert Functions

Elena Guardo, Adam Van Tuyl

We study the Hilbert functions of fat points in P^1 x P^1. If Z is an arbitrary fat point subscheme of P^1 x P^1, then it can be shown that for every i and j the values of the Hilb…