Bessel function
- Category
- STANDARD MATHEMATICS
- Definition
- A classical special function solving Bessel's differential equation and appearing in radial or cylindrical problems.
- Math Level
- TECHNICAL
- Index Excerpt
- Bessel J; Bessel Y
Bessel functions are classical special functions that solve Bessel's differential equation and appear naturally in problems with radial or cylindrical structure.
Several related families exist, including ordinary and modified Bessel functions. Their oscillatory or decaying behaviour makes them important across analysis, physics and number theory.
See also: K-Bessel function, asymptotic, Fourier analysis, Riemann zeta function.