connected subsets of $\mathbb{Z}.$
88301
What are all of the connected subsets of $\mathbb{Q}$?
77903
Finding the integral closure of $\mathbb{Z}$ in $\mathbb{Q}[i]$
146204
Subsets sharing at most $i$ elements
144246
Subset of $\mathbb{R}^n$ homeomorphic to $\mathbb{R}^n$
10127
Example of a sequence of closed and connected sets whose intersection is disconnected
100437
Classification of connected subsets of the real line (up to homeomorphism)
50412
Prime elements in $\mathbb{Z}/n\mathbb{Z}$
18039
Let $A$ be a dense subset of $X$ and suppose $A$ is connected in the induced subspace topology, then $X$ is also connected
113668
Uncountable chain of subsets of $\mathbb N$
146364
$X$ is connected iff $\forall A\subset X,$ $\partial A\neq\emptyset$
31266
Proof of "the continuous image of a connected set is connected"
104411
sum of two connected subset of $\mathbb{R}$
85099
How many subsets of $\mathbb{N}$ have the same cardinality as $\mathbb{N}$?
136108
Arbitrary intersection of closed, connected subsets of a compact space connected?
19754
$\mathbb{R}$ \ $\mathbb{Q}$ and $\mathbb{R}^2\setminus\mathbb{Q}^2$ disconnected?
23225
Union of connected subsets is connected if intersection is nonempty
104855
Prove that $N \subset Z(G)$