The closure of $(a;b)$ in an order topology
88028
Topology - closures of intervals with the order topology
150796
Subspace topology and order topology (2)
108156
Algebraic closure of $\mathbb{C}(x)$ is isomorphic to $\mathbb{C}$
84512
The preimage of continuous function on a closed set is closed.
99927
The closure of $\{ z:|f(z)|<c\}$ is the set $\{z:|f(z)|\leq c\}$.
97761
Show that a proper continuous map from $X$ to locally compact $Y$ is closed
101986
Prob. 2, Sec. 20 in Munkres' TOPOLOGY, 2nd ed: The dictionary order topology on $\mathbb{R} \times \mathbb{R}$ is metrizable.
147793
A variation on the induced topology (subspace topology)
136851
Proof that the set of subsequential limits is closed
30411
The closure of the irrational numbers on $\mathbb{R}$
141642
Closure of a certain subset in a compact topological group
99236
Interior of closure of an open set
122821
Is the following proof valid? About the closure of a subgroup, of a topological group, being again a subgroup
44623
Closed set as a countable intersection of open sets
24050
Characterization of the Closure of a Set
30231
The boundary of union is the union of boundaries when the sets have disjoint closures
152193
The intersection of a closure with an open set