Symbols:V

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Roman Numeral

$\mathrm V$ or $\mathrm v$

The Roman numeral for $5$.

Its $\LaTeX$ code is \mathrm V  or \mathrm v.

Closed Set

$V$

Frequently used, and conventionally in many texts, to denote an closed set in the context of topology.

The $\LaTeX$ code for \(V\) is V .

Variance

$\var X$

Let $X$ be a discrete random variable.

Then the variance of $X$, written $\var X$, is a measure of how much the values of $X$ vary from the expectation $\expect X$, and is defined as:

$\var X := \expect {\paren {X - \expect X}^2}$

That is: it is the expectation of the squares of the deviations from the expectation.

The $\LaTeX$ code for \(\var X\) is \var X .

Volume

$V$

The usual symbol used to denote the volume of a body is $V$.

Its $\LaTeX$ code is V .

Speed

$v$

The usual symbol used to denote the speed of a body is $v$.

Its $\LaTeX$ code is v .

Electric Potential

$v$

The usual symbol used to denote the electric potential on a body is $v$.

Its $\LaTeX$ code is v .

Volt

$\mathrm V$

The symbol for the volt is $\mathrm V$.

Its $\LaTeX$ code is \mathrm V .

Normal Volume

$V_0$

The symbol for normal volume is $V_0$.

The $\LaTeX$ code for \(V_0\) is V_0 .

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