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Si.427 is a hand tablet from 1900-1600 BC, created by an Old Babylonian surveyor. It’s made out of clay and the surveyor wrote on it with a stylus. Credit: Must credit UNSW Sydney ========================================================================================== A UNSW mathematician has revealed the origins of applied geometry on a 3700-year-old clay tablet that has been hiding in plain sight in a museum in Istanbul for over a century. The tablet – known as Si.427 – was discovered in the late 19th century in what is now central Iraq, but its significance was unknown until the UNSW scientist’s detective work was revealed today. Most...

Calcea Johnson and Ne'Kiya Jackson have added four further novel proofs of the theorem that had also not been published before, and left clues for another five. Teen mathematicians Ne’Kiya Jackson (left) and Calcea Johnson (right) who have done what mathematics texts said was impossible, finding a non-circular trigonometric proof of Pythagoras Theorem. Image Credit: Calcea Johnson High school students Calcea Johnson and Ne'Kiya Jackson did something in 2023 that most mathematicians had thought impossible: They discovered a way to prove Pythagoras' theorem using trigonometry that did not depend on circular reasoning. Now, they have published their work in a...

An ancient clay tablet shows that the Babylonians used Pythagorean triples to measure accurate right angles for surveying land.Students may not believe that Pythagoras’ Theorem has real-world uses, but a 3,700-year-old tablet proves that their maths teachers are right. The artifact, named Si.427, shows how ancient land surveyors used geometry to draw boundaries accurately. Discovered in central Iraq in 1894, Si.427 sat in a museum in Istanbul for over a century. Now, mathematician Dr Daniel Mansfield from the University of New South Wales, Australia, has studied the clay tablet and uncovered its meaning. “Si.427 dates from the Old Babylonian (OB)...

Stonehenge builders used Pythagoras' theorem 2,000 years before Greek philosopher was born, say experts The builders of Britain’s ancient stone circles like Stonehenge were using Pythagoras' theorem 2,000 years before the Greek philosopher was born, experts have claimed. A new book, Megalith, has re-examined the ancient geometry of Neolithic monuments and concluded they were constructed by sophisticated astronomers who understood lengthy lunar, solar and eclipse cycles and built huge stone calendars using complex geometry One contributor, megalithic expert Robin Heath has even proposed that there exists a great Pythagorean triangle in the British landscape linking Stonehenge, the site from which...