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

Date and Time: Thursday, May 12, 2005, 12:15 pm

Duration: This information is not available in the database

Location: This information is not available in the database

Speaker: Martin Aigner (FU Berlin)

Pancake Problems

The pancake problem is a well-known combinatorial problem that seems to have applications in parallel processing. Given a stack of n pancakes in arbitrary order, all of different sizes, the goal is to sort them into the size-ordered configuration. The allowed sorting operation is top-flip where the first k pancakes are taken up and replaced in reversed order.

I discuss some of the known results on the length needed to sort a stack of n pancakes and give a survey of several natural variants, including some problems that, surprisingly, despite their simplicity seem to present formidable challenges.

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