135 reputation
bio website pages.iu.edu/~rdlyons
location Bloomington, IN
visits member for 9 months
seen Jan 17 at 17:07

I am a professor of mathematics at IU. My profile picture is based on the IU symbol. It is the identity element of the sandpile group on a part of the square lattice. The color coding is that height 0 is black, height 1 is blue, height 2 is red, and height 3 is dark yellow.

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