A root having multiplicity is called a simple root. For example, has a simple root at , but has a root of multiplicity 2 at , which is therefore not a simple root.
Simple Root
See also
Multiple Root, Multiplicity, RootExplore with Wolfram|Alpha
References
Krantz, S. G. "Zero of Order n." §5.1.3 in Handbook of Complex Variables. Boston, MA: Birkhäuser, p. 70, 1999.Referenced on Wolfram|Alpha
Simple RootCite this as:
Weisstein, Eric W. "Simple Root." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/SimpleRoot.html