Difference between revisions of "ApCoCoA-1:NC.CoCoALToC"
From ApCoCoAWiki
| Line 15: | Line 15: | ||
</itemize> | </itemize> | ||
<example> | <example> | ||
| − | + | USE QQ[x[1..2],y[1..2]]; | |
| − | F:=[[1, | + | F:= [[2x[1],y[1],x[2]^2], [-9y[2],x[1]^2,x[2]^3], [5]]; --2x[1]y[1]x[2]^2-9y[2]x[1]^2x[2]^3+5 |
| − | NC. | + | NC.CoCoALToC(F); |
| − | 3 | + | |
| − | - | + | [[2, [1, 3, 2, 2]], [-9, [4, 1, 1, 2, 2, 2]], [5, [ ]]] |
| − | |||
| − | |||
------------------------------- | ------------------------------- | ||
</example> | </example> | ||
Revision as of 17:23, 3 May 2013
NC.CoCoALToC
Convert a polynomial in a non-commutative polynomial ring from the CoCoAL format to the C format.
Syntax
NC.CoCoALToC(F:LIST):INT
Description
Please set non-commutative polynomial ring (via the command Use) before calling this function. For more information, please check the relevant commands and functions.
@param F: a non-commutative polynomial in the CoCoAL format. Each polynomial is represented as a LIST of LISTs, and each element in every inner LIST involves only one indeterminate or none (a constant). For example, the polynomial f=2x[2]y[1]x[2]^2-9y[2]x[1]^2x[2]^3+5 is represented as F:=[[2x[1],y[1],x[2]^2], [-9y[2],x[1]^2,x[2]^3], [5]]. The zero polynomial 0 is represented as the empty LIST [].
@return: a LIST, which is the C format of the polynomial F.
Example
USE QQ[x[1..2],y[1..2]]; F:= [[2x[1],y[1],x[2]^2], [-9y[2],x[1]^2,x[2]^3], [5]]; --2x[1]y[1]x[2]^2-9y[2]x[1]^2x[2]^3+5 NC.CoCoALToC(F); [[2, [1, 3, 2, 2]], [-9, [4, 1, 1, 2, 2, 2]], [5, [ ]]] -------------------------------
See also
