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fermatslibrary's profile
Fermat's Library
Fermat's Library
Fermat's Library
@fermatslibrary

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Fermat's Library

@fermatslibrary

A platform for illuminating academic papers. We publish an annotated paper every week. Our chrome extension for arXiv: https://fermatslibrary.com/librarian 

fermatslibrary.com
Joined September 2015

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    Fermat's Library‏ @fermatslibrary 28 Aug 2019
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    The Rubik's Cube is a 3-D puzzle that was invented by Hungarian professor of architecture Ernő Rubik in 1974. Today it is considered as one of the world's best selling toys. There are 43,252,003,274,489,856,000 possible arrangements of the cube. 😮pic.twitter.com/SQemAPVKgR

    6:20 AM - 28 Aug 2019
    • 1,459 Retweets
    • 4,805 Likes
    • Domi Grapes And Vantablack Phạm Thái Hoàng Hugo Garza Carry On 'Til The End Romain Legresy Bryan Reyes Mangual FURKAN Pacific
    56 replies 1,459 retweets 4,805 likes
      1. New conversation
      2. Maths Ed‏ @MathsEdIdeas 28 Aug 2019
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        Replying to @fermatslibrary

        The cube is solvable from any position in ≤20 moves (‘God’s number’), as proven in 2010 http://cube20.org . For more: http://bit.ly/2zwV0hg  • http://bit.ly/2Nb671p  • https://twitter.com/i/moments/905717794641244160 …pic.twitter.com/mrrD5GwoXP

        2 replies 29 retweets 93 likes
      3. Maths Ed‏ @MathsEdIdeas 28 Aug 2019
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        Replying to @MathsEdIdeas @fermatslibrary

        And for a Rubik’s cube with stickers, there are 101,097,362,223,624,462,291,180,422,369,532,000,000 combinations if you're allowed to take the stickers off and replace them in different places http://bit.ly/2Nz5Ys9 

        1 reply 6 retweets 34 likes
      4. End of conversation
      1. New conversation
      2. Luis Batalha  🇵🇹 🇺🇸‏ @luismbat 28 Aug 2019
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        Replying to @fermatslibrary

        Even a simple 2x2x2 Rubik's Cube has 3,674,160 possible combinations! Fun fact: it took Erno Rubik one month to solve the Rubik's cube after he created it :)pic.twitter.com/RhZ3xxL7qr

        1 reply 9 retweets 104 likes
      3. IFnotYOUthenWHO?‏ @PrmSwrp 28 Aug 2019
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        Replying to @luismbat @fermatslibrary

        One could solve it within five minutes by dismantling and rejoining it. 😅

        1 reply 0 retweets 0 likes
      4. 1 more reply
      1. Derick Rethans  🔶‏ @derickr 28 Aug 2019
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        Replying to @fermatslibrary

        But there only 20 moves required to unscramble any arrangement: https://www.cube20.org/ 

        1 reply 2 retweets 40 likes
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      2. 𝕋𝕒𝕠 ℂ𝕙𝕚‏ @be_the_source_ 28 Aug 2019
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        Replying to @fermatslibrary

        For me, one of the best creations in the Rubik's cube is this one "cube in the cube in the cube", which can also be beautifully presented in the Flower of life.pic.twitter.com/y0e2IgcvBx

        2 replies 3 retweets 17 likes
      3. Jon‏ @Maths2014sow 28 Aug 2019
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        Replying to @be_the_source_ @fermatslibrary

        Mine too. Takes me ten minutes or so to do. The other 'side' is obviously similar in pattern.pic.twitter.com/o1Jtc58MNR

        1 reply 0 retweets 3 likes
      4. End of conversation
      1. Virgilio Rdz.‏ @ri_virgilio 28 Aug 2019
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        Replying to @fermatslibrary

        Can someone explain the terms of the product?

        2 replies 1 retweet 6 likes
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      2. jk‏ @jk8860 28 Aug 2019
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        Replying to @UfoIssue @fermatslibrary

        Not sure if you did it intentionally, but both “its” are wrong.

        1 reply 0 retweets 1 like
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