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11951
bio website math.uvic.ca/faculty/aquas
location University of Victoria
age 46
visits member for 4 years
seen 5 hours ago
The pic is the phase portrait of a simple "piecewise isometry". Define a map by sliding the two halves of the plane: the top half to the right; the lower half to the left and then rotate. Around each periodic point of the map there's a "periodic island". These are what are in the image...

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