De Groot dual explained

In mathematics, in particular in topology, the de Groot dual (after Johannes de Groot) of a topology τ on a set X is the topology τ* whose closed sets are generated by compact saturated subsets of (X, τ).

References

• R. Kopperman (1995), Asymmetry and duality in topology. Topology Applications, 66(1), 1 - 39, 1995.