Figure-eight Knot (mathematics)
In knot theory, a figure-eight knot (also called Listing's knot) is the unique knot with a crossing number of four. This is the smallest possible crossing number except for the unknot and trefoil knot. The figure-eight knot is a prime knot.
Read more about Figure-eight Knot (mathematics): Origin of Name, Description, Mathematical Properties, Invariants
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