Equality
$$A \neq B$$
A is not equal to B
Subset
$$A \not\subseteq B$$
A is not a subset of or equal to B
Superset
$$A \not\supseteq B$$
A is not a superset of or equal to B
Intersection
$$A \cap B =$$
{ }
Union
$$A \cup B =$$
{ charity, devotion, fasting, meiosis, mitosis, pilgrimage, prayer, purity, struggle }
Symmetric Difference
$$A \ominus B =$$
{ charity, devotion, fasting, meiosis, mitosis, pilgrimage, prayer, purity, struggle }
Difference
$$A - B =$$
{ meiosis, mitosis }
Difference
$$B - A =$$
{ charity, devotion, fasting, pilgrimage, prayer, purity, struggle }
Cartesian Product
$$A \times B =$$
{ (meiosis, charity),
(meiosis, devotion),
(meiosis, fasting),
(meiosis, pilgrimage),
(meiosis, prayer),
(meiosis, purity),
(meiosis, struggle),
(mitosis, charity),
(mitosis, devotion),
(mitosis, fasting),
(mitosis, pilgrimage),
(mitosis, prayer),
(mitosis, purity),
(mitosis, struggle) }
Cell division