Proceedings of the National Academy of Sciences of the United States of America, Vol. 100, No. 14 (Jul. 8, 2003), pp. 8138-8141 (4 pages) The hypergeometric differential equation was found by Euler ...
Heun functions, which generalise the well‐known hypergeometric functions, are solutions to the Heun differential equation – a second‐order linear differential equation with four regular singular ...