regular singular point

(redirected from Irregular singularity)

regular singular point

[′reg·yə·lər ¦siŋ·gyə·lər ′pȯint]
(mathematics)
A regular singular point of a differential equation is a singular point of the equation at which none of the solutions has an essential singularity.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
has one irregular singularity at infinity which gives an essential singularity at this point.
The result is an equation with a regular singularity at zero and an irregular singularity at infinity of higher order:
This operator has two regular singularities at zero and one and an irregular singularity at infinity, the singularity structure of the confluent Heun equation.