Heun Function
In mathematics, the local Heun function Hℓ(a,q;α,β,γ,δ;z) (Karl L. W. Heun 1889) is the solution of Heun's differential equation that is holomorphic and 1 at the singular point z = 0. The local Heun function is called a Heun function, denoted Hf, if it is also regular at z = 1, and is called a Heun polynomial, denoted Hp, if it is regular at all three finite singular points z = 0, 1, a.
Read more about Heun Function: Heun's Equation, Symmetries
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