FUNCTION: dual - generate the opposite of a poset or bound poset algebra
CALLING SEQUENCE:
dual(p)
p - a poset or bound poset algebra
SYNOPSIS:
EXAMPLES:
> p:= [8, {[1, 2, 4],[2, 5, 6],[3, 2],[4, 6],[7, 2],[8, 7]},{[3, 6], [1, 5]}];
>
dual(p);
SEE ALSO: poset, posetalgebra, isodual
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