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Residue ( $Res$ )

The residue of a meromorphic function

f

at an isolated singularity

a

is the coefficient of

(z - a)^{- 1}

in its Laurent series. At a simple pole,

Res (f, a) = lim_{z \to a} (z - a) f (z) .

Table of contents 33 1
- Residue at a pole of order n Residue 11

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