Existence of a set $C$ such that $|B|=|C|$ and $A\cap C=\emptyset$
2667
Given $S \hookrightarrow T$ construct $U ≈ T$ disjoint from $S$ in Z set theory?
124325
Element of, subset of and empty sets
47056
Show that the boundary of a set equals the boundary of its complement
13167
Prove $A = (A \setminus B) \cup (A \cap B)$
104274
Express $C$ interms of the sets $A_n$
5132
Given $A\cap \overline{B}\neq \emptyset$, prove $A\cup B$ connected.
137707
How to prove that $(A\cup B) \cap C \subseteq A\cup (B\cap C)$
141806
Prove that a nest of sets has an empty intersection
116527
Validating a proof for necessary and sufficient conditions on sets A & B such that $P(A) \cup P(B) = P(A\cup B)$
109219
How do the sets $\emptyset\times B,\ A\ \times \emptyset, \ \emptyset \times \emptyset $ look like?
9850
How many ways are there to choose 3 subsets $A,B,C$ of a set $\{1,2,3...n\}$ such that $ A \cap B \cap C = \emptyset $
111032
Proof of Sets involving the Cartesian Product
122271
A subset of a transitive set is transitive
41080
If A, B, and C are set and $A \subset B ,B \subset C \rightarrow A \subset C$
155233
$A=\emptyset $ if and only if $B = A \bigtriangleup B$
60707
Show that if $ \ A \cup B = A$ and $ \ A\cap B = A$ then $ \ A = B$
70143
Mutually exclusive countable subsets of a countable set