`Gamma`¶

Gamma function. For positive integers, Gamma[n] = (n-1)!.

$ wo 'Gamma[1]'
1

$ wo 'Gamma[5]'
24

$ wo 'Gamma[6]'
120

$ wo 'Gamma[0]'
ComplexInfinity

$ wo 'Gamma[-1]'
ComplexInfinity

$ wo 'Gamma[x]'
Gamma[x]

Gamma¶