Author

Robert Record

Welsh mathematician and inventor of the equals sign

1 ebook

Robert Recorde 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.

From Wikipedia , CC BY-SA 4.0

Ebooks by Robert Record

The Path-Way to Knowledg, Containing the First Principles of Geometrie

Public Domain

Ebook

The Path-Way to Knowledg, Containing the First Principles of Geometrie

Robert Record

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