Chalkdust
A magazine for the mathematically curious
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      • Chalkdust issue 15 – Coming 25 May
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      • In conversation with Dominique Sleet
      • That’s a Moiré
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      • On the cover: Vhat? Vhere? Venn
      • An odd card trick
      • Correction: Who is the best England manager?
      • A walk on the random side
      • Celebrating simple mathematical models
    • Issue 13
      • In conversation with Ulrike Tillmann
      • The maths of Mafia
      • On conditional probability: Cards, Covid, and Crazy Rich Asians
      • How to be the least popular American president
      • Who is the best England manager?
      • The big argument: Is the Einstein summation convention worth it?
      • Surfing on wavelets
      • On the cover: cellular automata
      • Significant figures: John Conway
      • Diagrammatic algebra: On the road to category theory
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Cryptic

  • Cryptic crossword, Issue 14

    Cryptic crossword, Issue 14

    22 November 2021
    Can you solve it?
  • Cryptic crossnumber (including hints)

    Cryptic crossnumber (including hints)

    1 May 2021
    Looking for a challenge? Try our cryptic crossnumber—with hints and tips so anyone can have a go!

Read also

  • Chalkdust issue 15 – Coming 25 May

    Chalkdust issue 15 – Coming 25 May

    Roll up, roll up! Squid Game, hidden harmonies and DnD coming your way in Issue 15. (Plus all the usual nonsense.)
  • Crossnumber winners, Issue 14

    Crossnumber winners, Issue 14

    Did you solve it?
  • How to Think About Abstract Algebra

    How to Think About Abstract Algebra

    We review the seventh of this year’s nominees for the Book of the Year

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Chalkdust is published by Chalkdust Magazine, UCL, Gower Street, London WC1E 6BT, United Kingdom. ISSN 2059-3805 (Print). ISSN 2059-3813 (Online).