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Each formula on this website is given a unique identification number. As the Wolfram Function Site expands and more information is added, the position of a given formula within its group may change or the group might be split into several subgroups. However, the unique identification number will never change.

All unique identification numbers will have the following form, with each x representing a digit between 0 and 9.

xx.xx.xx.xxxx.xx

Each group in the citation number specifies a portion of the hierarchy in which the formula resides.

First set of two digits: Function category
Second set of two digits: Function within the category
Third two digits: Section
Next four digits: Formula within section
Last two digits: Revision number

The citation number is then incorporated into a corresponding URL that can be used to directly reference a particular formula. We recommend that you use these unique reference URLs for any citation purposes. These reference URLs will have the following form, in which each italicized letter represents a digit.

http://functions.wolfram.com/aa.bb.cc.dddd.ee

Some examples of working citation numbers are:

http://functions.wolfram.com/01.06.02.0001.01
http://functions.wolfram.com/11.01.04.0001.01

If you only have a citation number, it can be entered into the citation search to bring up its corresponding formula. To see the formula associated with a given citation number, enter the citation number into the search form that appears at the top right of the front page.





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