incomplete gamma function

(redirected from Lower incomplete gamma function)

incomplete gamma function

[‚in·kəm′plēt ′gam·ə ‚fəŋk·shən]
(mathematics)
Either of the functions γ(a,x) and Γ(a,x) defined by where 0 ≤ x ≤ ∞ and a > 0.
References in periodicals archive ?
The previous integral it is common used in the statistical analysis, being known as lower incomplete gamma function, having the following structure
where [GAMMA]() and P() are the gamma and the lower incomplete gamma functions, respectively.
GAMMA](a, x) and [gamma](a, x) stand for the upper and lower incomplete gamma functions ([20], eq.