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math.HO2013
What's in YOUR wallet?
Lara Pudwell, Eric Rowland
We use Markov chains and numerical linear algebra -- and several CPU hours -- to determine the expected number of coins in a person's possession under certain conditions. We identi…
math.HO2005
Digit Reversal Without Apology
Lara Pudwell
In 1966, Alan Sutcliffe published an introductory paper on "numbers which are multiplied when their digits are reversed". Two years later T. J. Kaczynski extended Sutcliffe's work…