Sigma function
From Biocrawler, the free encyclopedia.
In mathematics, by sigma function one can mean one of the following:
- Divisor function for arithmetic functions, σa(n).
- Rado's sigma function, see busy beaver.
In mathematics, by sigma function one can mean one of the following:
Wikipedia (http://en.wikipedia.org/wiki/Main_Page)
Sigma_function (http://en.wikipedia.org/wiki/Sigma_function)
version history (http://en.wikipedia.org/w/index.php?title=Sigma_function&action=history)
GNU Free Documentation Lizenz (http://en.wikipedia.org/wiki/Wikipedia:Text_of_the_GNU_Free_Documentation_License)
CC-by-sa (http://creativecommons.org/licenses/by-sa/2.5/)