Difference between revisions of "ApCoCoA-1:NCo.SetX"
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Revision as of 16:31, 2 October 2020
NCo.SetX
Set alphabet (set of indeterminates) for a free monoid ring.
Syntax
NCo.SetX(X:STRING)
Description
@param X: a STRING which is the alphabet (set of indeterminates) of a free monoid ring. Every letter in X must have a unique occurrence. The order of letters in X is important since it will induce word orderings. For example,
NCo.SetX("xyz"); NCo.SetOrdering("LLEX");defines the length-lexicographic ordering induced by x>y>z.
Example
NCo.RingEnv(); Coefficient ring : Q Ordering : LLEX ------------------------------- NCo.SetX(<quotes>xyz</quotes>); NCo.RingEnv(); Coefficient ring : Q Alphabet : xyz Ordering : LLEX -------------------------------
See also
