Mathematical Symbols and Abbreviations
This leaflet provides information on symbols and notation commonly used in mathematics. It shows the meaning of a symbol and, where necessary, an example and an indication of how the symbol would be said. For further information from mathcentre resources, a search phrase is given. This Quick Reference leaflet is contributed to the mathcentre Community Project by Janette Matthews and reviewed by Tony Croft, University of Loughborough.
Sigma notation provides a concise and convenient way of writing long sums. This leaflet explains how.
The modulus of a number
This leaflet explains what is meant by the modulus, or absolute value of a number. (Engineering Maths First Aid Kit 1.5)