A planar diagram depicting a link (or knot) as a sequence of segments with gaps representing undercrossings and solid lines overcrossings. In such a diagram, only two segments should ever cross at a single point. Link diagrams for the trefoil knot and figure eight knot are illustrated above.

# Link Diagram

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## Cite this as:

Weisstein, Eric W. "Link Diagram." From
*MathWorld*--A Wolfram Web Resource. https://mathworld.wolfram.com/LinkDiagram.html