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  • Maths in a minute

    Want facts and want them fast? Our Maths in a minute series explores key mathematical concepts in just a few words.

  • The real numbers and Cauchy sequences

    We take the real numbers for granted, but what are they really?

  • Arithmetic billiards

    Need to find the least common multiple or greatest common divisor of two numbers? A billiard table of the right proportions holds the answers!

  • Maths in a minute: The axioms of probability theory

    Take a quick trip to the foundations of probability theory.

  • Citizen science: Schumann resonances

    Resonant electromagnetic waves, created by lightning flashes, circle the Earth. Wim Hordijk explores the maths and shows how you can keep track with these phenomena.

  • The maths of randomness

    Randomness is surprisingly hard to define. Fortunately the mathematical language we use to describe it is beautifully well defined.

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