Sets equipped with sublattice of their power sets

48 Views Asked by At

Topology and measure theory are two examples of fields which include, in their objects of study, sets which are given structure by equipping them with a lattice of a certain type sitting in their power set. Are there other examples of this pattern?

1

There are 1 best solutions below

0
On

A bornology is an example too.

A convexity structure is not a lattice (not closed under unions, just under intersections and directed unions), but does have the "feel" of a topological structure, to me at least.

A convergence space is a set $X$ and a relation on the set of ultrafilters on it times $X$, etc. So such "second order" (or higher order) structures are not uncommon. Not always lattice based, though.