• Finding Anagrams with Sledgehammers

    An anagram is a word (or phrase) that you get by rearranging the letters of another word (or phrase), for example: LISTEN SILENT ELEVEN PLUS TWO TWELVE PLUS ONE Traditionally, an anagrammist (i.e., someone looking to create anagrams) might start with a name and then look for interesting/humorous/clever anagrams, but there are plenty of other […]

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  • Tilings and Integer Programming

    This is the story behind sequence A355477 from the Online Encyclopedia of Integer Sequences. Let’s say you have an unlimited supply of “zig-zag” Tetris pieces: How many can you pack into an n x n square? For example, if you’re trying to fill a 4×4 square, then you can fit three such pieces: but, try […]

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  • Circular Reasoning in Ancient Egypt

    In grade school, we all learned how to calculate the area of a circle: $$A = \pi r^2.$$ This formula dates back to Archimedes and the mathematics of ancient Greece, but the Greeks were not the only ancient civilization to tackle such problems. Other ancient cultures – including the ancient Babylonians, Egyptians, Indians, Chinese, etc. […]

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