Here are some images from Harpa, in Reykjavík, Iceland. Harpa is home to the Iceland Symphony Orchestra and the Icelandic Opera, and is one of the most mathematical buildings I have ever seen. The face Read more…
The new year 2024 is a difference of squares, , which got me thinking about a fun little number theory problem: Is there a largest number that can not be expressed as the difference of Read more…
The new year is one of my favorite kinds of numbers: a difference of squares! This observation got me thinking about what kinds of numbers can be written as the difference of squares. For example, Read more…
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