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D.14.1.18 arrLocalize

Procedure from library arr.lib (see arr_lib).

Usage:
arrLocalize(A, v); arrangement A, intvec v;

Return:
arr: the localized arrangement A_X, i.e. A_X only contains the hyperplanes which contain the flat X, which is defined by the equations A[v]

Example:
 
LIB "arr.lib";
ring R = 0,(x,y,z),dp;
arr A=arrTypeB(3);
intvec v=5,8;
arr B=arrLocalize(A,v);
B;
==> _[1]=x-y
==> _[2]=x+y
==> _[3]=x
==> _[4]=y
==>
See also: arrCone; arrDecone; arrEssentialize; arrIsEssential; arrRestrict.