IST
发表于 2025-3-25 05:22:07
,Magic Squares of Subtraction of Adam Adamandy Kochański,ski studied this subject too, and in 1686 he published a paper in . titled “Considerationes quaedam circa Quadrata et Cubos Magicos”. In that paper he proposed a novel type of magic square, where in every row, column, and diagonal, if the entries are sorted in decreasing order, the difference betwee
cortisol
发表于 2025-3-25 10:39:59
,Euler’s E228: Primality Testing and Factoring via Sums of Squares,re, and check if the remainder is a square. If not, repeat, repeat, repeat. But Euler, being Euler, found a way of converting all those subtractions into additions. Then he did several things to speed up the computation even more. He applied this to 1,000,009, and—in less than a page—found that ther
fringe
发表于 2025-3-25 11:46:56
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INCUR
发表于 2025-3-25 19:52:26
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纬度
发表于 2025-3-25 23:48:41
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grieve
发表于 2025-3-26 03:39:02
The Reception of American Mathematics Education in Soviet Pedagogical Journals of the 1960s and 197termath. Parallel to the reforms in the West, but somewhat later, innovative and fundamental changes to mathematics education were being carried out in the Soviet Union. Soviet educational theorists were aware of the Western developments and discussed them in periodicals devoted to mathematics educa
Adornment
发表于 2025-3-26 07:08:40
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费解
发表于 2025-3-26 09:12:07
The Convolution as a Mathematical Object,lution can be traced as far back as the Middle Ages in China. After d’Alembert and Euler, applications of convolution integrals appeared at the end of the 18. century and the beginning of the 19. century. These were in potential theory, the heat conduction equation, and the wave equation as develope
sorbitol
发表于 2025-3-26 13:16:20
2366-3308 butions are written by the leading scholars in the field.Wil.This volume contains fourteen papers that were presented at the 2016 Annual Meeting of the Canadian Society for History and Philosophy of Mathematics/La Société Canadienne d’Histoire et de Philosophie des Mathématiques, held at the Univers
Proponent
发表于 2025-3-26 20:46:46
,“A Most Elegant Property”: On the Early History of Lexell’s Theorem,he later proofs of the theorem as well as discuss some applications. In this connection, I argue that some of the work of Euler’s disciples Fuss and Schubert may be connected to Lexell’s investigations. In conclusion, I touch upon the role of Lexell’s Theorem in the history of hyperbolic geometry.