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尹榮重 大田開放大學 1986 論文集 Vol.5 No.-
The point at which the regularity of a complex function f(z) disappears is a singular point f(z) is if one-valued regular function, but it is not always regular at every point, in this case the irregular point is an isolated singular one. It is proved to be equivalent to an analytic function that a complex function is a regular one within a domain. The function elements which can the analytic functions are connected by analytic continuation. The kinds, forms and properties of the singular points of the functions are studied, and it is shown that the functions are extended to Cauchy's integral formula.