Seminars & Colloquia Calendar
The distribution of extremal values of linear recurrences modulo m
John Miller: Johns Hopkins University
Location: Hill 705
Date & time: Thursday, 16 February 2017 at 5:00PM - 5:11PM
1, 1, 2, 3, 5, 8, 3, 1, 4, 5, 9, 4, 3, 7, 0, 7, 7, 4, 1, 5, 6, 1, 7, 8,...
We can also start with different initial values, e.g. (3,4):
3, 4, 7, 1, 8, 9, 7, 6, 3, 9, 2, 1, 3, 4, 7, 1, 8, 9, 7, 6, 3, 9, 2, 1,...
This sequence has a cycle of length 12. The cycle lengths of such sequences are a classical subject related to algebraic number theory. We may also consider the extremal values of this sequence. For example, the 2nd sequence has minimum 1 and maximum 9. In this talk we will discuss the properties of such extremal values as we vary the initial values and the modulus, for the Fibonacci recurrence and for other examples of linear recurrences. We will do some experiments, and we will connect the distribution of extremal values to questions of elementary geometry.
This talk arises out of work done in Professor Zeilberger's experimental mathematics class in the spring of 2012.
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