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Posts Tagged ‘Dick Gibbs’


This Saturday, February 6, 2010, Dr. Dick Gibbs will be presenting two interesting talks on “Partitioning” and “Cycle Structure of Permutations.”  Following are his descriptions.

I) Partitioning: lines by points; planes by lines; 3-space by planes; etc.  There are some nice patterns to be observed here.  There’s also the counting of regions formed by chords determined by n points on a circle — it’s (somehow) related to the 4-dimensional partitioning problem.

II) Cycle structure of permutations: lots of counting (and probability) problems here. For example: how many perms. have a given cycle structure? (pretty well-known); for how many perms. does a given pair, triple, etc. occur in the same cycle? (not so well-known — to me anyway!)..

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