doc/polyhedra.rst

   1 Polyhedra Module
   2 ================
   3
   4 .. py:class:: Polyhedron
   5
   6     Polyhedron class allows users to build and inspect polyherons.  The following methods provide the properties of a polyhedron.
   7
   8     .. py:method:: equalities(self)
   9
  10         Return a list of the equalities in a polyhedron.
  11
  12     .. py:method:: inequalities(self)
  13
  14         Return a list of the inequalities in a polyhedron.
  15
  16     .. py:method:: constraints(self)
  17
  18         Return ta list of the constraints of a polyhedron.
  19
  20     The following unary operations can be used to inspect a polyhedron.
  21
  22     .. py:method:: disjoint(self)
  23
  24         Returns a polyhedron as a disjoint.
  25
  26     .. py:method:: isuniverse(self)
  27
  28         Return ``True`` if a polyhedron is the Universe set.
  29
  30     .. py:method:: subs(self, symbol, expression=None)
  31
  32         Subsitutes an expression into a polyhedron and returns the result.
  33
  34 To create a polyhedron, the user must use the folloing functions to define  equalities and inequalities as the contraints.
  35
  36 .. py:function:: Eq(left, right)
  37
  38    Create a constraint by setting *left* equal to *right*.
  39
  40 .. py:function:: Ne(left, right)
  41
  42     Create a constraint by setting *left* not equal to *right*.
  43
  44 .. py:function:: Lt(left, right)
  45
  46    Create a constraint by setting *left* less than *right*.
  47
  48 .. py:function:: Le(left, right)
  49
  50    Create a constraint by setting *left* less than or equal to *right*.
  51
  52 .. py:function:: Gt(left, right)
  53
  54    Create a constraint by setting *left* greater than *right*.
  55
  56 .. py:function:: Ge(left, right)
  57
  58    Create a constraint by setting *left* greater than or equal to *right*.