Closures in ordered squares
5448
Finding the closure of some subsets of the ordered square
146062
A "Cantor-Schroder-Bernstein" theorem for partially-ordered-sets
142782
Operator< and strict weak ordering
10477
Finding the closure of A=$\mathbb Q \cap [0,1]$.
152193
The intersection of a closure with an open set
15966
A way to well-order real line
88595
Prob. 21, Sec. 17 in Munkres' TOPOLOGY, 2nd ed: Closure and complementation can result in at most 14 different sets
127233
Cardinality of order types in $\mathbb{N}$
157684
About closure under +
2056
A space is $T_{0}$ if and only if the closures of singletons are distinct
76521
Every partial order can be extended to a linear ordering
18462
Transitivity check vs. Transitive Closure
154363
Prove that $\text{aff}(X) = \text{aff}(\text{closure}(X))$
52451
Ordered Triples and Set Theory
78737
How symmetric is the hierarchy of indecomposable ordinals?
72556
Is the closure of path-connected set path connected?
144731
Disjoint closed sets in a second countable zero-dimensional space can be separated by a clopen set