# Bessel functions

I vaguely remember the following conversation from back when I was a PhD student.

Student A: What’s a Bessel function?

Student B (waving his arms about): It’s a wavy thing – goes like this, doesn’t it?

Me: Sounds vaguely familiar – I think we did it in third-year.

Student A: But what IS it?

Me: Something to do with waves on a membrane, isn’t it?

Student A: Does it have a formula?

Me and student B: Don’t know…

## 2 Responses to “Bessel functions”

Marcus, its interesting to see, concepts as Bessel function/equation (including other special functions as legendre, gamma, airy, incomplete beta, etc,…) that have been mainly dominant in their application in physics/engineering, but it also pops up in other domain, like finance, such as the evaluation of financial instruments as asian option pricing , traded in the option financial markets.

“Asymmetric skew Bessel processes and their applications to finance”

http://www.econ.kuleuven.ac.be/tew/academic/actuawet/pdfs/asymmetric.pdf

Marcus, here is another non-traditional area where bessel function is being applied, that I’ve just came across.

“Numerical Analysis of Resistivity Variation of Horizontal Multi-layer Earth and Its Application in Earthquake Prediction”

http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=1633155