Spectral Maps
A spectral map f: X → Y between spectral spaces X and Y is a continuous map such that the preimage of every open and quasi-compact subset of Y under f is again quasi-compact.
The category of spectral spaces which has spectral maps as morphisms is dually equivalent to the category of bounded distributive lattices (together with morphisms of such lattices. In this anti-equivalence, a spectral space X corresponds to the lattice K(X)
Read more about this topic: Spectral Space
Famous quotes containing the words spectral and/or maps:
“How does one kill fear, I wonder? How do you shoot a spectre through the heart, slash off its spectral head, take it by its spectral throat?”
—Joseph Conrad (18571924)
“And at least you know
That maps are of time, not place, so far as the army
Happens to be concernedthe reason being,
Is one which need not delay us.”
—Henry Reed (19141986)