This archive contains files associated to the article "Families of explicitly isogenous jacobians of variable-separated curves" by Benjamin Smith. The files are README --- This file isogenies.pdf --- A copy of the article itself degree-7.m --- Data for Section 8 of the article degree-11.m --- Data for Section 9 of the article degree-13.m --- Data for Section 10 of the article degree-15.m --- Data for Section 11 of the article degree-21.m --- Data for Section 12 of the article degree-31.m --- Data for Section 13 of the article Each degree-N.m is an executable Magma program (in plain text format), defining some polynomials and matrices and verifying some identities. Further details on the format and content can be found at the top of each of these files. Contact (smith at lix.polytechnique.fr) to report any problems, or to request further information.