Isolated singularity
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Isolated singularity
In complex analysis, a branch of mathematics, an isolated singularity is one that has no other singularities close to it.In other words, a complex number z0 is an isolated singularity of a function f if there exists an open disk D centered at z0 such that f is holomorphic on D \ {z0}, that is, on the set obtained from D by taking z0 out.
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• Isolated singularity