Definition:Universal Class/Notation

Universal Class: Notation
The use of $V$ as the symbol used to denote the universal class follows the presentation by and, in their.

Much of the literature uses $U$ and its variants, for example $\Bbb U$.

However, as $U$ is often used to denote the universal set, prefers to use $V$ for the universal class in order to reduce confusion between the two.

The symbol $\mathfrak A$ is also seen in older literature; however, the number of those who still like using this awkward and difficult-to-read Germanic font is decreasing.