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posetMeet -- returns the meet of two elements

Synopsis

Description

This function returns the greatest element that is less than both a and b in P.
i1 : P = poset ({a,b,c,d,e,f}, {(a,d),(d,f),(b,d),(b,e),(c,e),(e,f)});
i2 : posetMeet (P, d,e)

o2 = {b}

o2 : List

Caveat

This function returns an error if the meet does not exist. To check if the meet exists use meetExists.

See also

Ways to use posetMeet :