 An equivalent statement of Jensen's formula that is frequently used is
where formula_5 denotes the number of zeros of formula_6 in the disc of radius formula_7 centered at the origin.Jensen's formula may be generalized for functions which are merely meromorphic on D. Namely, assume that 
where "g" and "h" are analytic functions in D having zeros at formula_9
and 
formula_10
respectively, then Jensen's formula for meromorphic functions states that

Jensen's formula can be used to estimate the number of zeros of analytic function in a circle.Namely, if "f" is a function analytic in a disk of radius "R" centered at "z"0 and if |"f"| is bounded by "M" on the boundary of that disk, then the number of zeros of "f" in a circle of radius "r" 0 does not exceed

Jensen's formula is an important statement in the study of value distribution of entire and meromorphic functions.