To increase the region of validity of this equation, the logarithm of the
gamma function that appears on its left-hand side has been changed to
, where is the general logarithm.
Originally was used, where
is the principal branch of the logarithm.
…
►The main purpose of the present chapter is to extend these definitions and properties to complex arguments .
►The main functions treated in this chapter are the logarithm
, ; the exponential , ; the circular trigonometric (or just trigonometric) functions
, , , , , ; the inverse trigonometric functions
, , etc.
…