A complex number is written as a bi where a and b are real numbers an i called the imaginary unit has the property that i2 -1. As it is virtually impossible to list all the symbols ever used in mathematics only those symbols which occur often in mathematics or mathematics education are included. The symbol on the left is an infinite sum while the one on the right is an infinite product.
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Ask Question Asked 7 years 7 months ago. Complex number z a bi Conjugate bar z a -bi Symmetry -z -a -bi Equality a bi c di hArr a c b d Addition abicdiacbdi. Cos i y e y e. The following list of mathematical symbols by subject features a selection of the most common symbols used in modern mathematical notation within formulas grouped by mathematical topic.