In 1690, Giovanni Cassini was the first person to suggest that Jupiter could not be a solid planet. He noted that the planet was rotating at different rates depending on the latitude (differential rotation). twitter.com/fermatslibrary/sta

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Evolution of the notation for the empty set:0 - George Boole 🇬🇧 (1847)𝑂 - Georg Cantor 🇩🇪 (1880){} - Gottlob Frege 🇩🇪(1882)Λ - Giuseppe Peano 🇮🇹 (1889)∅ - Andre Weil 🇫🇷 (1939) twitter.com/fermatslibrary/sta

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John Nash wrote 4 big papers. In retrospect, 3 of them would have probably deserved a Fields Medal. twitter.com/fermatslibrary/sta

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RelativityThere was a young lady named Bright,Whose speed was far faster than light;She set out one day,In a relative way,And returned home the previous night.by A. H. Reginald Buller (1923) twitter.com/fermatslibrary/sta

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This week's paper is an interesting look at unintended outcomes of city planning theories - "A Long History of a Short Block. Four Centuries of Development Surprises on a Single Stretch of a New York City Street"Paper here: fermatslibrary.com/s/a-long-hi twitter.com/fermatslibrary/sta

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📄 typing it would require 10³⁶⁹⁶⁹³⁰⁹⁴ miles paper⚛️ printing it with one-atom thick ink would require the matter in millions of our universesThere's one thing we know: the last digits are 1,045,865,289 twitter.com/fermatslibrary/sta

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1) Draw a circle with a radius of 1 inch 2) Circumscribe the circle with a triangle3) Circumscribe the triangle with a circle...The limiting radius of the resulting circle is smaller than a basketball - R≃ 8.7000366 twitter.com/fermatslibrary/sta

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"Hiding between all the ordinary numbers was an infinity of transcendental numbers whose presence you would never have guessed unless you looked deeply into mathematics" - Carl Sagan twitter.com/fermatslibrary/sta

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Human perception of brightness is generally logarithmic, that's why we only notice any darkening in an eclipse when the sun is almost fully covered. For instance, direct sunlight is ~100x brighter than indoor lighting, but both look fairly bright to us. twitter.com/fermatslibrary/sta

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Fibonacci is a made up name for Leonardo Bonacci of Pisa. The name Fibonacci comes from the Latin "𝒇𝒊lius 𝑩𝒐𝒏𝒂𝒄𝒄𝒊", "the son of Bonacci". His father was Guglielmo Bonaccio. twitter.com/fermatslibrary/sta

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Pythagoras of Samos discovered that there is mathematical order as the basis of all musical sounds. 🎼It was the first time such conscious connection was made. A hidden pattern of Nature had been unveiled. Learn more about his experiments here: fermatslibrary.com/s/string-th twitter.com/fermatslibrary/sta

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In 1981, Yoshio Koide discovered this unexplained empirical equation relating the masses of the electron, muon and tau twitter.com/fermatslibrary/sta

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1 decillion (10³³) is the largest power of 10 known to humans that can be represented as the product of 2 numbers that contain no zero digits. A lot of mathematicians believe we won't find a larger number of this kind. twitter.com/fermatslibrary/sta

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François Viète was the first person to uncover an infinite product formula for π in the 16th century. The formula involves just a single number: 2 twitter.com/fermatslibrary/sta

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In 1994, Teledesic announced plans to build a network of 840 low-earth orbiting satellites to provide Internet to anywhere on Earth (up to 100Mbit/s⬆️ & 720Mbit/s⬇️)Learn more about systems like this in this week's paper: fermatslibrary.com/s/satellite twitter.com/fermatslibrary/sta

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