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Macaulay2 web site
Posets
::
meetIrreducibles
meetIrreducibles -- determines the meet irreducible elements of a poset
Synopsis
Usage:
M = meetIrreducibles P
Inputs:
P
,
an object of class
Poset
Outputs:
M
,
a
list
Description
An element
a
of
P
is meet irreducible if it is not the meet of any set of elements not containing
a
.
i1 : meetIrreducibles booleanLattice 3 o1 = {110, 011, 111, 101} o1 : List
See also
joinIrreducibles
-- determines the join irreducible elements of a poset
meetExists
-- determines if the meet exists for two elements of a poset
posetMeet
-- determines the meet for two elements of a poset
Ways to use
meetIrreducibles
:
meetIrreducibles(Poset)