Coverage for local/lib/python2.7/site-packages/sage/matroids/advanced.py : 100%

r""" 

Advanced matroid functionality. 

This module collects a number of advanced functions which are not directly 

available to the end user by default. To import them into the main namespace, 

type:: 

sage: from sage.matroids.advanced import * 

This adds the following to the main namespace: 

- Matroid classes: 

- :class:`MinorMatroid <sage.matroids.minor_matroid.MinorMatroid>` 

- :class:`DualMatroid <sage.matroids.dual_matroid.DualMatroid>` 

- :class:`RankMatroid <sage.matroids.rank_matroid.RankMatroid>` 

- :class:`CircuitClosuresMatroid <sage.matroids.circuit_closures_matroid.CircuitClosuresMatroid>` 

- :class:`BasisMatroid <sage.matroids.basis_matroid.BasisMatroid>` 

- :class:`LinearMatroid <sage.matroids.linear_matroid.LinearMatroid>` 

- :class:`RegularMatroid <sage.matroids.linear_matroid.RegularMatroid>` 

- :class:`BinaryMatroid <sage.matroids.linear_matroid.BinaryMatroid>` 

- :class:`TernaryMatroid <sage.matroids.linear_matroid.TernaryMatroid>` 

- :class:`QuaternaryMatroid <sage.matroids.linear_matroid.QuaternaryMatroid>` 

- :class:`GraphicMatroid <sage.matroids.linear_matroid.GraphicMatroid>` 

Note that you can construct all of these through the 

:func:`Matroid() <sage.matroids.constructor.Matroid>` function, which is 

available on startup. Using the classes directly can sometimes be useful 

for faster code (e.g. if your code calls ``Matroid()`` frequently). 

- Other classes: 

- :class:`LinearSubclasses <sage.matroids.extension.LinearSubclasses>` 

- :class:`MatroidExtensions <sage.matroids.extension.MatroidExtensions>` 

Instances of these classes are returned by the methods 

:meth:`Matroid.linear_subclasses() <sage.matroids.matroid.Matroid.linear_subclasses>` 

and 

:meth:`Matroid.extensions() <sage.matroids.matroid.Matroid.extensions>`. 

- Useful functions: 

- :func:`setprint() <sage.matroids.utilities.setprint>` 

- :func:`newlabel() <sage.matroids.utilities.newlabel>` 

- :func:`get_nonisomorphic_matroids() <sage.matroids.utilities.get_nonisomorphic_matroids>` 

- :func:`lift_cross_ratios() <sage.matroids.linear_matroid.lift_cross_ratios>` 

- :func:`lift_map() <sage.matroids.linear_matroid.lift_map>` 

AUTHORS: 

- Stefan van Zwam (2013-04-01): initial version 

""" 

from __future__ import absolute_import 

import sage.matroids.matroid 

import sage.matroids.basis_exchange_matroid 

from .minor_matroid import MinorMatroid 

from .dual_matroid import DualMatroid 

from .rank_matroid import RankMatroid 

from .circuit_closures_matroid import CircuitClosuresMatroid 

from .basis_matroid import BasisMatroid 

from .linear_matroid import LinearMatroid, RegularMatroid, BinaryMatroid, TernaryMatroid, QuaternaryMatroid 

from .utilities import setprint, newlabel, get_nonisomorphic_matroids, lift_cross_ratios, lift_map 

from . import lean_matrix 

from .extension import LinearSubclasses, MatroidExtensions 

from .union_matroid import MatroidUnion, MatroidSum, PartitionMatroid 

from .graphic_matroid import GraphicMatroid