The maps to symbol, ↦, is a rightward arrow protruding from a vertical bar. It is used in mathematics and in computer science to denote functions. In Z notation, a specification language used in software development, this symbol is called the maplet arrow and the expression x ↦ y is called a maplet. In separation logic it denotes the contents of a specific cell of memory.
In the Unicode character set, the symbol is code point U+21A6.
See also
- Arrow notation – e.g., x ↦ x + 1 {\displaystyle x\mapsto x+1} , also known as map
References
Mikušiak, Luboš; Miroslav Adámy; Thomas Seidmann (1997). "Publishing formal specifications in Z notation on world wide web". TAPSOFT '97: Theory and Practice of Software Development. Lecture Notes in Computer Science. Vol. 1214. pp. 871–874. doi:10.1007/BFb0030650. ISBN 978-3-540-62781-4. 978-3-540-62781-4 ↩
Unicode Character 'RIGHTWARDS ARROW FROM BAR' (U+21A6) https://www.fileformat.info/info/unicode/char/21a6/index.htm ↩