Difference between revisions of "ApCoCoA-1:BB.NDneighbors"
From ApCoCoAWiki
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<command> | <command> | ||
| − | + | <title>BB.NDneighbors</title> | |
| − | + | <short_description>Compute a list of next-door neighbors.</short_description> | |
| − | <syntax> | + | <syntax>BB.NDneighbors(OO:LIST):LIST</syntax> |
| − | BB.NDneighbors(OO:LIST):LIST | + | <description> |
| − | </syntax> | + | 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 [i,j,k] such that b_i = x_k * b_j. |
| − | |||
| − | 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 | ||
<itemize> | <itemize> | ||
<item>@param <em>OO</em> A list of terms representing an order ideal.</item> | <item>@param <em>OO</em> A list of terms representing an order ideal.</item> | ||
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------------------------------- | ------------------------------- | ||
</example> | </example> | ||
| − | + | </description> | |
| − | <types> | + | <types> |
| − | <type>list</type> | + | <type>list</type> |
| − | </types> | + | </types> |
| − | + | <see>BB.ASneighbors</see> | |
| − | + | <key>NDneighbors</key> | |
| − | + | <key>BB.NDneighbors</key> | |
| − | + | <key>borderbasis.NDneighbors</key> | |
| − | + | <wiki-category>Package_borderbasis</wiki-category> | |
</command> | </command> | ||
Revision as of 11:34, 24 April 2009
BB.NDneighbors
Compute a 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 [i,j,k] such that b_i = x_k * b_j.
@param OO A list of terms representing an order ideal.
@return A list of next-door neighbors of OO.
Example
Use QQ[x,y,z]; BB.NDneighbors([1,x]); [[3, 1, 1], [4, 2, 1]] -------------------------------
