Physics
Celebrate pi day with 9 trillion more digits than ever before
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Ancient pi calculator gets a modern twist for pi day
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US judge rules that you can't copyright pi
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Physics
Constants clash on pi day
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Pi day: Celebrate pi by eating pies
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Pi's nemesis: Mathematics is better with tau
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To infinity and beyond: The struggle to save arithmetic
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Magic numbers: A meeting of mathemagical tricksters
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Pi day: Five tasty facts about the famous ratio
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'Most beautiful' math structure appears in lab for first time
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Alice's adventures in algebra: Wonderland solved
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<i>e</i>: the mystery number
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