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4.23.4.10 dualCone

Syntax:
dualCone( cone c )
Type:
cone
Purpose:
the dual of the cone
Example:
 
intmat M1[2][2]=
1,0,
0,1;
cone c1=coneViaRays(M1);
cone d1=dualCone(c1);
d1;
==> AMBIENT_DIM
==> 2
==> INEQUALITIES
==> 0,1,
==> 1,0
==> EQUATIONS
==> 
print(rays(d1));
==> 1, 0
==> 0, 1
intmat M2[2][2]=
1,1,
0,1;
cone c2=coneViaRays(M2);
cone d2=dualCone(c2);
d2;
==> AMBIENT_DIM
==> 2
==> INEQUALITIES
==> 0,1,
==> 1,1
==> EQUATIONS
==> 
print(rays(d2));
==>  1, 0
==> -1, 1

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            User manual for Singular version 3-1-4, Jan 2012, generated by texi2html.