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William Jones (1675-1749), Mathematician

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Born in modest circumstances in Anglesey, William Jones became a distinguished mathematician. He rose to become a Fellow of the Royal Society, one of the world's premier scientific institutions, in 1712 and later its Vice-President. His Synopsis Palmariorum Matheseos (1706) was a mathematical guide for beginners and introduced the symbol to represent the ratio of the circumference of a circle to its diameter.