Trying to get the timing right was a nice little diversion at the bottom of this beautiful crater lake.
Appreciation Art Geometry Photography
Math Photo: Triangles and Reflections
In most ways this is a sorrowful triangle, but on this day it was remarkably beautiful.
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Appreciation Numbers
10/22/2021 — Happy Permutation Day!
Today we celebrate a Permutation Day! I call days like today permutation days because the digits of the day and the month can be rearranged to form the year, as seen in the above animation.
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Appreciation Numbers
02/21/2021 — Happy Permutation Day!
Today we celebrate a Permutation Day! I call days like today permutation days because the digits of the day and the month can be rearranged to form the year, as seen in the above animation. Today can also be considered simply a Transposition Day, as only a single transposition, or exchange of two numbers, suffices.
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