WebMar 27, 2024 · section) is called a branch of the logarithm and the set {z = ρeiα ρ ≥ 0} on which logz is not defined is the branch cut. The point z = 0 is the branch point. These ideas will carry over to other multiple-valued functions in this chapter, each of which will result from trying to take the inverse a periodic function. Revised: 3/27/2024 WebJun 21, 2024 · The principal branch of the logarithm is the one where you always select the argument to be in ( − π, π]. The principal branch of log. . ( z) is the one created by always taking the function value whose imaginary part is in ( − π, π]. These definitions happen to be equivalent for the logarithm function -- but if you take a general ...
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WebDifferent values of k correspond to different branches of the multivalued complex logarithm. To better understand the branches of a multivalued function, consider a path in the complex plane that starts on the positive real axis at the point z 0 > 0. Let us choose argz 0 = 0, in which case the complex logarithm is given initially by lnz = Ln ... WebA branch of is a continuous function defined on a connected open subset of the complex plane such that is a logarithm of for each in . [2] For example, the principal value defines a branch on the open set … shock collar around his balls
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