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This Weird Pyramid Always Lands on the Same Face, Confirming 40-Year-Old Theory

“Bille” is the first-ever monostable tetrahedron, or a pyramid-like shape with four triangular faces that has one stable resting position. What this means is that Bille, no matter how you throw it and how it lands, will flip back on exactly the same side every single time. In a recent preprint submitted to arXiv, mathematicians … Read more

Undergraduate Upends a 40-Year-Old Data Science Conjecture

In a 1985 paper, the computer scientist Andrew Yao, who would go on to win the A.M. Turing Award, asserted that among hash tables with a specific set of properties, the best way to find an individual element or an empty spot is to just go through potential spots randomly—an approach known as uniform probing. … Read more

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