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Macaulay2 web site
Posets
::
Poset _ ZZ
Poset _ ZZ -- returns an element of the ground set
Synopsis
Usage:
a = P_i
Operator:
_
Inputs:
P
,
an object of class
Poset
i
,
an
integer
, index in the ground set
Outputs:
a
,
a
thing
, the
i
-th vertex in the ground set
Description
This method allows easy access to the vertices of the poset.
i1 : P = booleanLattice 3;
i2 : P_0 o2 = 000
i3 : P_3 o3 = 011
See also
Poset _ List
-- returns elements of the ground set
Poset _*
-- returns the ground set of a poset
Poset
-- a class for partially ordered sets (posets)