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norm


Usage

norm z


Signature

norm: % $\to$ %


Parameter Type Description
z % a complex


Returns

Returns $z \bar z$ where $\bar z$ is the conjugate of z.


Remarks

When R is commutative, the imaginary part of $z \bar z$ is $0$, and the usual complex norm can be computed via real norm z. The imaginary part of $z \bar z$ is not necessarily $0$ when R is not commutative.



Manuel Bronstein 2004-06-28