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Supplementary code to "Algebraic surfaces as Hadamard products of curves" - MaRDI portal

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Supplementary code to "Algebraic surfaces as Hadamard products of curves"

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DOI10.5281/zenodo.14888009Zenodo14888009MaRDI QIDQ6702781

Dataset published at Zenodo repository.

Author name not available (Why is that?)

Publication date: 18 February 2025

Copyright license: No records found.



Description

README How to use the code? This repository contains only Macaulay2 files. In order to use them, download the files in the same folder used by Macaulay2. If you want to use the functions and the results of the computation contained in the file sample.m2, you should use the command load "sample.m2". What does this repository contain? Hadamard_curves_P3.m2: a file containing a function that performs the Hadamard product of two curves L and R in 3-dimensional projective space defined by equations over the rationals. After loading this file, you can define the ideal I1 of L in the variables x0,...,x3, the ideal I2 of R in the variables y0,...,y3 and type X = preimage_phi(I1+I2) to get the ideal of L \star R in the variables z0,...,z3; example_3_3.m2: a file containing the computation related to Example 3.3 of the paper; lemma_3_8.m2: a file containing the computation related to Lemma 3.8 of the paper; example_4_6.m2: a file containing the computation related to Example 4.6 of the paper.






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