Professor Raúl Rojas has published a book about how symbols have been used throughout history in mathematics. The work was translated into English this year.
Most of us have little trouble working out how many milliliters are in 2.4 liters of water (it's 2,400). But the same can't be said when we're asked how many minutes are in 2.4 hours (it's 144).
A new collection of research papers examines how humans conceptualize numbers and the numeral systems we’ve build around them ...
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