A diagram expressing how the gluing operation that connects the handlebodies involved in a Heegaard splitting proceeds, usually by showing how the meridians of the handlebody are mapped.
Heegaard Diagram
See also
Handlebody, Heegaard SplittingExplore with Wolfram|Alpha
References
Rolfsen, D. Knots and Links. Wilmington, DE: Publish or Perish Press, p. 239, 1976.Referenced on Wolfram|Alpha
Heegaard DiagramCite this as:
Weisstein, Eric W. "Heegaard Diagram." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/HeegaardDiagram.html