| 
 | 
 | 
A Function in the Complex Numbers 
 is analytic on a region 
 if it is
Complex Differentiable at every point in 
.  The terms Holomorphic Function and Regular Function are
sometimes used interchangeably with ``analytic function.''  If a Function is analytic, it is infinitely
Differentiable.
See also Bergman Space, Complex Differentiable, Differentiable, Pseudoanalytic Function, Semianalytic, Subanalytic
References
Morse, P. M. and Feshbach, H.  ``Analytic Functions.''  §4.2 in
  Methods of Theoretical Physics, Part I.  New York: McGraw-Hill, pp. 356-374, 1953.