Monthly Archives: June 2013

Powers of 9/10’s

An example of one of my favorite surprise calculations comes up in the context of quantum computing.  The idea is that if you have a process that gets things right 90% of the time and you repeat the process and … Continue reading

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Edging Coloring Complete Graphs – Two Examples

Dr. John Caughman from Portland State University presented our Kieval Lectures this year.  He described rainbow graphs and matching, rectangle graphs and lattice paths. I intended to take notes because of past experience but I got so interested that I just … Continue reading

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Uselessly Wise

Older and wiser.  The more attentive experience, the more wisdom.  Years ago I handcrafted a stone house.  I was a professional carpenter for five years.  So I have opinions about house building and design. Yet I am not going to … Continue reading

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