Dehn-twists and the mapping class group

siddhartha-gadgil / Superficial

Curves and other structures on surfaces (topology)

MIT License

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Open siddhartha-gadgil opened 4 years ago

siddhartha-gadgil commented 4 years ago

Determine the action of a Dehn twist on canonical geodesics (using #9).
Using this, determine whether a composition of Dehn twists gives the identity in the mapping class group.