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I'm learning how to take pictures of really small things. Some of my experiments will go here.
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Regina is software that originated in the work of Rubinstein, Letscher, Rannard and Ben Burton. I've been contributing to it since around 2005. This forum is to post articles about Regina, including overviews of modules, comments on development, helpful scripts and such.
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Anything political goes here.
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A developing collection of lecture notes on differential geometry.
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Mathematics is a lovely subject, but the time scales in mathematics are enormous. As a grad student, I did motorcycle maintenance as a way of having an activity with more immediate feedback. Now that I have a little more room to play with, I'm starting to do some woodworking. Maybe eventually I'll get into metal.
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As an exercise in a course I teach, we make visualizations of data scraped from a variety of sources. Here are some examples from the course.
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