采用Knopp-Kojima的方法,去掉(-limn→∞)(lnn)/(λn)=E〈+∞等条件,研究了一般的Dirichlet级数在全平面内与右半平面内的下级,给出了下级由系数表示的充要条件.
By the method from Knopp-Kojima,the lower orders of the general Dirichlet series in the whole plane and in the right half plane are studied without the conditions of (-limn→∞)lnn/λ_n= E+∞etc.A necessary and sufficient conditions of the lower orders which are expressed by the coefficients of the Dirichlet series are obtained.