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Posets :: openInterval

openInterval -- computes the subposet contained strictly between two points

Synopsis

Description

The open interval between a and b is the subposet of P induced by the elements z such that p < z < q. If a and b are incomparable, then an error is thrown.

i1 : P = booleanLattice 3;
i2 : openInterval(P, "001", "111")

o2 = Relation Matrix: | 1 0 |
                      | 0 1 |

o2 : Poset

See also

Ways to use openInterval :