Zero Was Invented Twice

For centuries, the idea of "nothing" was a philosophical puzzle that stumped mathematicians. Early number systems, like those used by the Babylonians, often used a blank space as a placeholder, which could be easily misread. The first true symbol for zero emerged independently on opposite sides of the world. In Mesoamerica, the Maya civilization developed a shell-like glyph for zero by at least 350 AD. It was an essential part of their sophisticated base-20 numeral system, allowing them to make precise astronomical calculations and maintain their famous Long Count calendar.

While the Mayan zero was a brilliant innovation, it was the concept developed in India that would ultimately change the world. Indian mathematicians went beyond using zero as a mere placeholder and began treating it as a true number with its own properties. The astronomer Brahmagupta was the first to formalize this leap in his writings around 628 AD, establishing rules for addition, subtraction, and multiplication with zero. This powerful new mathematical tool traveled from India through the Arab world, where it was refined by scholars like al-Khwarizmi, and eventually made its way to Europe, forming the foundation (Review) for algebra and all of modern mathematics.