Specifically , it is a non-trivial knot which can not be written as the knot sum of two non-trivial knots .
In knot theory , a prime knot or prime link is a knot that is , in a certain sense , indecomposable .
It is a non-trivial knot which can not be written as the knot sum of two non-trivial knots .
In knot theory , a prime knot or prime link is a knot that is , in a certain sense , indecomposable .