Composition of Relations
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High Quality Content by WIKIPEDIA articles! In mathematics, the composition of binary relations is a concept of forming a new relation S R from two given relations R and S, having as its most well-known special case the composition of functions.A further variation encountered in computer science is the Z notation: circ is used to denote the traditional (right) composition, but (a fat semicolon with Unicode code point U+2A3E) denotes left composition. This use of semicolon coincides with the notation for function composition used (mostly by computer scientists) in Category theory. Because…mehr

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High Quality Content by WIKIPEDIA articles! In mathematics, the composition of binary relations is a concept of forming a new relation S R from two given relations R and S, having as its most well-known special case the composition of functions.A further variation encountered in computer science is the Z notation: circ is used to denote the traditional (right) composition, but (a fat semicolon with Unicode code point U+2A3E) denotes left composition. This use of semicolon coincides with the notation for function composition used (mostly by computer scientists) in Category theory. Because U+2A3E is hard to distinguish from a normal semicolon in some fonts at small sizes, its "capital" version (U+2A1F[3]) may be preferable in some fonts. In non-Unicode LaTeX, the symbol may obtain using the fatsemi macro from the stmaryrd package.