Iverson Bracket
Let 
be a mathematical statement, then the Iverson bracket is defined by
This notation conflicts with the brackets sometimes used to denote the Floor Function. For this reason, and because ofthe elegant symmetry of the Floor Function and Ceiling Function symbols
and 
, the use of 
to denote the Floor Function should be deprecated.See also Ceiling Function, Floor Function
References
Graham, R. L.; Knuth, D. E.; and Patashnik, O. Concrete Mathematics: A Foundation for Computer Science. Reading, MA: Addison-Wesley, p. 24, 1990. Iverson, K. E. A Programming Language. New York: Wiley, p. 11, 1962.
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