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math.CT2021
Each closure operator induces a topology and vice-versa ("version for children")
Eduardo Ochs
One of the main prerequisites for understanding sheaves on elementary toposes is the proof that a (Lawvere-Tierney) topology on a topos induces a closure operator on it, and vice-v…
math.CO2021★ 1 cited
On a formula that is not in "Grothendieck Topologies in Posets"
Eduardo Ochs
The paper "Grothendieck Topologies on Posets" by A.J. Lindenhovius shows that when is an Artinian poset and is the topos then th…