Gottfried Wilhelm Leibniz – Feature Column

Puzzling Like the Seventeenth Century

On: April 1, 2026

In: 2026, Algebra and Number Theory, History of mathematics, Ursula Whitcher

Tagged: 1500s, 1600s, Anton Schultze, base 10, Gottfried Wilhelm Leibniz, Maria Cunitz, Mayan numerals, number systems

Though the chart starts out in alphabetical order, there's a break in the pattern that offers a clue... Puzzling Like the Seventeenth Century Ursula Whitcher Mathematical Reviews (AMS) The following chart is taken from the second edition of a German-language arithmetic textbook by Anton Schultze. It was published in LiegnitzRead More →