Mittagsseminar (in cooperation with J. Lengler, A. Steger, and D. Steurer)

Date and Time: Tuesday, September 30, 2008, 12:15 pm

Duration: This information is not available in the database

Location: OAT S15/S16/S17

Speaker: Emo Welzl

Triangulations of Convex Polygons - A Historical Note

Around 1750 Euler asked for the number of triangulations of a convex n-gon (in a letter to Goldbach), but it took about eighty years until this question was resolved with the answer we know it today (Catalan numbers). This will be mostly historical remarks (fresh up your Latin!), including the one-picture proof that Euler missed, although he already conjectured the solution based on the first entries of the sequence.

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