A new collection of research papers examines how humans conceptualize numbers and the numeral systems we’ve build around them ...

Imaginary numbers began as a desperate solution to equations that seemed unsolvable. In the 1500s, Italian mathematicians working on cubic equations encountered the square root of negative one — a ...

Many online platforms now ask for phone verification to cut down spam and confirm users are real. Sharing your personal number can put it at risk. Using rented phone numbers offers a safer and more ...