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Wow, Mom: It’s an Ambigram!
Wow, Mom: It’s an Ambigram!
THE NEW YORK TIMES, APRIL 7, 2011

“One of the points of the Math Encounters series is for people to see ways that math touches on their lives,” Mr. Whitney said. “The fact that there’s such a thing as mathematical calligraphy, if you will, is surprising to a lot of people.”