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D.15.2.27 arrRandomCentral
Procedure from library arr.lib (see arr_lib).
- Usage:
- arrRandomCentral(d,m,n); int d,m,n
- Return:
- Random central arrangement, where m is the number of hyperplanes, n
the dimension, d the upper bound for absolute value of coefficients.
Example:
| | LIB "arr.lib";
ring R = 0,x(1..20),dp;
arrRandomCentral(7,3,15);
==> _[1]=2*x(1)-6*x(2)-3*x(3)+4*x(5)+x(6)-4*x(7)-3*x(8)-x(9)+x(10)-3*x(11)-6*\
x(12)-x(13)+2*x(14)-6*x(15)
==> _[2]=-4*x(1)+x(2)-3*x(3)-4*x(4)-7*x(6)-3*x(7)+x(9)-3*x(10)-4*x(11)-x(12)-\
7*x(13)-2*x(14)-3*x(15)
==> _[3]=-x(2)+4*x(3)+2*x(4)+5*x(5)-x(6)+6*x(7)+5*x(8)-6*x(9)+5*x(10)+x(12)+3\
*x(13)-5*x(14)+2*x(15)
==>
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See also:
arrBoolean;
arrBraid;
arrEdelmanReiner;
arrRandom;
arrTypeB;
arrTypeD.
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