<P> In mathematics, various typographical forms of brackets are frequently used in mathematical notation such as parentheses (), square brackets (), braces (), and angle brackets ⟨ ⟩ . Generally such bracketing denotes some form of grouping: in evaluating an expression containing a bracketed sub-expression, the operators in the sub-expression take precedence over those surrounding it . Additionally, there are several uses and meanings for the various brackets . </P> <P> Historically, other notations, such as the vinculum, were similarly used for grouping; in present - day use, these notations all have specific meanings . The earliest use of brackets to indicate aggregation (i.e. grouping) was suggested in 1608 by Christopher Clavius and in 1629 by Albert Girard . </P> <P> In the Z formal specification language, braces denote a set and angle brackets denote a sequence . </P>

Who is the mathematician who first use brackets to indicate grouping