Definition:Parenthesis/Historical Note

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Historical Note on Parenthesis

Round brackets $\paren \;$ first appeared in $1544$.

Square brackets $\sqbrk \;$ and braces $\set \;$ were used by François Viète in around $1593$.

1910: Alfred North Whitehead and Bertrand Russell: Principia Mathematica idiosyncratically use dots "$.$" for no immediate discernible benefit. The rules governing their use are complex and clumsy.