Robert Recorde (1510–1558)

Born 1510 CE, died 1558 CE.

Robert Recorde (c. 1510 – 1558) was a Welsh physician and mathematician. He invented the equals sign (=) and also introduced the pre-existing plus (+) and minus (−) signs to English speakers in 1557.

Text from the Wikipedia article Robert_Recorde, licensed CC BY-SA 4.0.

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Robert Recorde (1510–1558)

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