DLMF: Figure 8.3.8 ‣ §8.3 Graphics ‣ Incomplete Gamma Functions ‣ Chapter 8 Incomplete Gamma and Related Functions

8 Incomplete Gamma and Related Functions Incomplete Gamma Functions 8.3 Graphics 8.3 Graphics 8.4 Special Values

Figure 8.3.8 (See in context.)

Figure 8.3.8:

\Gamma\left(0.25,x+iy\right)

,

-3\leq x\leq 3

,

-3\leq y\leq 3

. Principal value. There is a cut along the negative real axis. When

x=y=0

,

\Gamma\left(0.25,0\right)=\Gamma\left(0.25\right)=3.625\dotsc

.

ⓘ

Annotations:

Symbols:: $\Gamma\left(\NVar{z}\right)$ : gamma function, $\mathrm{i}$ : imaginary unit, $\Gamma\left(\NVar{a},\NVar{z}\right)$ : incomplete gamma function and $x$ : real variable
Permalink:: http://dlmf.nist.gov/8.3.F8.viz

8.3 Graphics 8.4 Special Values

© 2010–2026 NIST / Disclaimer / Feedback; Version 1.2.8; Release date 2026-09-15.

Site Privacy Accessibility Privacy Program Copyrights Vulnerability Disclosure No Fear Act Policy FOIA Environmental Policy Scientific Integrity Information Quality Standards Commerce.gov Science.gov USA.gov