Concept information
Preferred term
branch point
Definition(s)
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In the mathematical field of complex analysis, a branch point of a multi-valued function (usually referred to as a "multifunction" in the context of complex analysis) is a point such that if the function is n-valued (has n values) at that point, all of its neighborhoods contain a point that has more than n values. Multi-valued functions are rigorously studied using Riemann surfaces, and the formal definition of branch points employs this concept.
(Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Branch_point)
Broader concept(s)
In other languages
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French
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point de ramification
URI
http://data.loterre.fr/ark:/67375/PSR-NW7ZN84W-3
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