A nonhyperbolic knot is a knot that is not hyperbolic, i.e., a knot that does not have a complement that can be given a metric of constant curvature .
Nonhyperbolic Knot
See also
Hyperbolic KnotExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Nonhyperbolic Knot." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/NonhyperbolicKnot.html