up previous next
The leading word (or term) of a non-zero polynomial in a free monoid ring over the binary field F_{2}={0,1}.
NCo.BLW(F:LIST):STRING
NCo.BLT(F:LIST):STRING
|
Please note: The function(s) explained on this page is/are using the
ApCoCoAServer. You will have to start the ApCoCoAServer in order to use it/them.
Please set ring environment
alphabet (or set of indeterminates)
X and
word ordering via the functions
NCo.SetX and
NCo.SetOrdering, respectively, before calling this function. The default ordering is the length-lexicographic ordering ("LLEX"). For more information, please check the relevant functions.
- @param F: a non-zero polynomial in the free monoid ring F_{2}. Each polynomial is represented as a LIST of words (or terms) in . Each word is represented as a STRING. For example, xy^2x is represented as "xyyx", and the identity is represented as the empty string "". Thus, the polynomial f=xy-y+1 is represented as F:=["xy", "y", ""]. The zero polynomial 0 is represented as the empty LIST [].
- @return: a STRING which represents the leading word of F with respect to the current word ordering. If F=0, the function returns nothing.
NCo.SetX("xX");
NCo.SetOrdering("LLEX");
F1:=["xX","Xx"];
NCo.BLW(F1);
xX
-------------------------------
NCo.BLW([]);
-------------------------------
|