Seven has long played a fascinating role in the sciences, psychology, mathematics and religion, and has uncanny usefulness as an organizing number. In Seven, Jacqueline Leo explores the cultural ...

The audio version of this article is generated by AI-based technology. Mispronunciations can occur. We are working with our partners to continually review and improve the results. The number 12 ...

What is your favorite number? For many people, it may be an irrational number such as pi (π), Euler’s number (e) or the square root of 2. Even among the natural numbers (positive integers), there are ...

Ah, Friday the 13th. A day of superstition, bad luck and careful avoidance of black cats and broken mirrors. Well, in some cultures, anyway. Though 13 has a long but foggy history of association with ...

In primates, number neurons in a dedicated parieto-frontal network encode the number of elements in a stimulus. Number neurons in the prefrontal cortex respond in an abstract manner, and their ...