Python interface to database of matroids
Project description
Python interface to database of matroids
This database was retrieved on 2023.12.02 from https://www-imai.is.s.u-tokyo.ac.jp/~ymatsu/matroid/index.html
Usage:
>>> from matroid_database import all_matroids_revlex >>> for m in all_matroids_revlex(5, 2): ... print(m) ********** 0********* 0****0**** 00*0**0*** 000******* 000******0 0000**0*** 0000**0**0 00000*00** 000000**** 0000000*** 00000000** 000000000*>>> from matroid_database import unorientable_matroids_revlex >>> for m in unorientable_matroids_revlex(8, 3): ... print(m) 0******0******0**********0********0*******0****0**0***** 0******0******0***0******0*0**0************************* 0000************0**********0****0**********0**0***0*****>>> from matroid_database import all_matroids_bases >>> for m in all_matroids_bases(4, 2): ... print(m) [[0, 1], [0, 2], [1, 2], [0, 3], [1, 3], [2, 3]] [[0, 2], [1, 2], [0, 3], [1, 3], [2, 3]] [[0, 2], [1, 2], [0, 3], [1, 3]] [[1, 2], [1, 3], [2, 3]] [[0, 3], [1, 3], [2, 3]] [[1, 3], [2, 3]] [[2, 3]]
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