ApCoCoA-1:BB.NDneighbors: Difference between revisions
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<command> | <command> | ||
<title> | <title>BB.NDneighbors</title> | ||
<short_description>list of next-door neighbors</short_description> | <short_description>list of next-door neighbors</short_description> | ||
<syntax> | <syntax> | ||
BB.NDneighbors(OO:LIST):LIST | |||
</syntax> | </syntax> | ||
<description> | <description> | ||
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<example> | <example> | ||
Use Q[x,y,z]; | Use Q[x,y,z]; | ||
BB.NDneighbors([1,x]); | |||
[[3, 1, 1], [4, 2, 1]] | [[3, 1, 1], [4, 2, 1]] | ||
------------------------------- | ------------------------------- | ||
</example> | </example> | ||
</description> | </description> | ||
<see> | <see>BB.ASneighbors</see> | ||
<key>kreuzer</key> | <key>kreuzer</key> | ||
<key>bb.ndneighbors</key> | |||
<key>borderbasis.ndneighbors</key> | <key>borderbasis.ndneighbors</key> | ||
<wiki-category>Package_borderbasis</wiki-category> | <wiki-category>Package_borderbasis</wiki-category> | ||
</command> | </command> | ||
Revision as of 19:52, 8 November 2007
BB.NDneighbors
list of next-door neighbors
Syntax
BB.NDneighbors(OO:LIST):LIST
Description
Computes the list of next-door neighbors in the border of the order ideal OO. The input is a list OO of terms that specify an order ideal. The output is a list of triples <formula>[i,j,k]</formula> such that <formula>b_i = x_k * b_j</formula>.
Example
Use Q[x,y,z]; BB.NDneighbors([1,x]); [[3, 1, 1], [4, 2, 1]] -------------------------------
