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tf.math.igamma

Compute the lower regularized incomplete Gamma function P(a, x).

Used in the notebooks

Used in the tutorials

The lower regularized incomplete Gamma function is defined as:

\(P(a, x) = gamma(a, x) / Gamma(a) = 1 - Q(a, x)\)

where

\(gamma(a, x) = \\int_{0}^{x} t^{a-1} exp(-t) dt\)

is the lower incomplete Gamma function.

Note, above Q(a, x) (Igammac) is the upper regularized complete Gamma function.

a A Tensor. Must be one of the following types: bfloat16, half, float32, float64.
x A Tensor. Must have the same type as a.
name A name for the operation (optional).

A Tensor. Has the same type as a.