# The Key to Mathematics by Oughtred

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**Credit:** ROYAL ASTRONOMICAL SOCIETY/SCIENCE PHOTO LIBRARY

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**Keywords:**
1600s,
1647,
17th century,
algebra,
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england,
english,
frontispiece,
historical,
history,
mathematical,
mathematics,
notation,
symbols,
text,
the key of the mathematics,
the key to mathematics,
title page,
william oughtred,
writing

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