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Editor: Janet Beery
Associate Editors: Amy Ackerberg-Hastings, Janet Barnett, Kathleen Clark, Lawrence D'Antonio, Douglas Ensley, Victor Katz, Daniel Otero, Randy Schwartz, Lee Stemkoski, Frank Swetz
Founding Editors: Victor Katz, Frank Swetz
An Investigation of Subtraction Algorithms from the 18th and 19th Centuries, by Nicole M. Wessman-Enzinger
This survey of four subtraction algorithms used in North America includes as sources both handwritten "cyphering books" and printed arithmetic texts.
Connecting Greek Ladders and Continued Fractions, by Kurt Herzinger and Robert Wisner
An exploration of two historical techniques for estimating irrational numbers and a link between them
Did Euler Know Quadratic Reciprocity?: New Insights from a Forgotten Work, by Paul Bialek and Dominic W. Klyve
The authors use their newly translated paper of Leonhard Euler to answer their title question.
Cubes, Conic Sections, and Crockett Johnson, by Stephanie Cawthorne and Judy Green
Author and illustrator Johnson, author of Harold and the Purple Crayon, posed a question about Euclid, cubes, and conic sections, and painted an answer!
When Nine Points Are Worth But Eight: Euler's Resolution of Cramer's Paradox, by Robert Bradley and Lee Stemkoski
Interactive graphics illustrate the seeming paradox that 9 points should determine a curve of order 3, yet two curves of order 3 can intersect in up to 9 distinct points.
David Hilbert's Radio Address, by James T. Smith
Read and listen to this famous 1930 address, with its dramatic conclusion: "Wir müssen wissen; wir werden wissen." ("We must know; we will know.")
Mathematical Treasures III, by Frank J. Swetz
Ishango Bone (20000-25000 years ago, Congo)
Old Babylonian Area Calculation (circa 1800-1600 BCE)
Zhu Shijie’s Introduction to Mathematical Studies, or Primer of Mathematics (1299, China)
Al-Banna's Lifting of the Veil in the Operations of Calculation (circa 1300, North Africa)
Piero della Francesca's illustrated Works of Archimedes (late 1450s, Italy)
Cornelis Cort's Engravings of Arithmetica and Geometria (1565)
Al-‘Amili's Quintessence of Calculation (circa 1600, Persia)
Thomas Harriot's Algebra (1631)
William Oughtred's Clavis Mathematicae (1631/1667)
Logic for American Independence (1748/1811)
Jeremiah Day's Introduction to Algebra (1814/1834)
"What's in Convergence? - Contents of Volume 11 - 2014," Loci (January 2014)