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Bertini :: ISPROJECTIVE

ISPROJECTIVE -- optional argument to specify whether to use homogeneous coordinates

Description

When set to 1, this option indicates that the input system is homogenized and the output should be given in projective space.
i1 : R = CC[x,y,z];
i2 : f = {(x^2+y^2-z^2)*(z-x),(x^2+y^2-z^2)*(z+y)};
i3 : bertiniPosDimSolve(f,ISPROJECTIVE=>1);
Temporary directory for input and output files:/var/folders/46/9b86vqxj4hjcngvy7kd7sb140000gn/T/M2-66069-0/0

The version of Bertini 
            you have installed on your computer 
            was used for this run. 
Bertini is under ongoing development by 
            D. Bates, J. Hauenstein, A. Sommese, and C. Wampler.
i4 : R=CC[x,y,z,u1,u2];--u1,u2 are parameters
i5 : f1=x^2+y^2-z^2;
i6 : f2=u1*x+u2*y;
i7 : finalParameters={{0,1}};
i8 : bPH=bertiniParameterHomotopy( {f1,f2}, {u1,u2},{finalParameters },ISPROJECTIVE=>1)
Temporary directory for input and output files:/var/folders/46/9b86vqxj4hjcngvy7kd7sb140000gn/T/M2-66069-0/1

The version of Bertini 
            you have installed on your computer 
            was used for this run. 
Bertini is under ongoing development by 
            D. Bates, J. Hauenstein, A. Sommese, and C. Wampler.


o8 = {{{-.594165-.300849*ii, -3.38813e-18-8.63296e-18*ii,
     ------------------------------------------------------------------------
     .594165+.300849*ii}, {-.198483-1.4734*ii, 4.33681e-19+2.71051e-19*ii,
     ------------------------------------------------------------------------
     -.198483-1.4734*ii}}}

o8 : List

Functions with optional argument named ISPROJECTIVE :

For the programmer

The object ISPROJECTIVE is a symbol.