Express $C$ in terms of the sets $A_n$
104274
Express $C$ interms of the sets $A_n$
67926
$S_n$ is generated by elements of the form $(1k)$
102042
If $X_n \stackrel{d}{\to} X$ and $c_n \to c$, then $c_n \cdot X_n \stackrel{d}{\to} c \cdot X$
77902
If $A,B,$ and $C$ are sets, then $A\times(B-C)$ = $(A \times B)$ $-$ $(A \times C)$.
114262
Find the cardinality of the following set $S_n=\{(x,y)|x^2+y^2=n, \text{where }x,y,n \in \mathbb Z\text{ and }n\geq0 \}$
100565
Property of sup of a set of numbers
140440
Proving $(A\times C)\cup(B\times D)\subseteq(A\cup B)\times(C\cup D)$
1627
Cartesian product of an arbitrary number of sets
40848
$a\mid b,c\mid d\Rightarrow\,\gcd(a,c)\mid \gcd(b,d)$
65549
What is the cartesian product of an empty set of sets?
120094
Prove, that for any A, B, C sets, $A\times (B\setminus C) = (A\times B)\setminus (A\times C)$ is true.
109219
How do the sets $\emptyset\times B,\ A\ \times \emptyset, \ \emptyset \times \emptyset $ look like?
49195
How to add mathematical notation of a set
11849
Size of a union of two sets
24499
Finding $(a, b, c)$ with $ab-c$, $bc-a$, and $ca-b$ being powers of $2$
58076
Subgroup generated by a set
110944
Proving that $AB-BA=cI$ for nontrivial $c \in \mathbb{C}$