# Definition:Bessel Function/Second Kind

< Definition:Bessel Function(Redirected from Definition:Bessel Function of the Second Kind)

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## Definition

A **Bessel function of the second kind of order $n$** is a Bessel function which is singular at the origin.

It is usually denoted $\map {Y_n} x$, where $x$ is the dependent variable of the instance of **Bessel's equation** to which $\map {Y_n} x$ forms a solution.

## Also known as

Some sources use $p$ to denote the order of the Bessel function.

## Also see

- Definition:Modified Bessel Function of the First Kind
- Definition:Modified Bessel Function of the Second Kind

## Source of Name

This entry was named for Friedrich Wilhelm Bessel.