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Cremona :: image(RationalMap,String)

image(RationalMap,String) -- closure of the image of a rational map using the F4 algorithm (experimental)

Synopsis

Function: image
Usage:

image(Phi,"F4")

image(Phi,"MGB")
Inputs:
- Phi, a rational map
- a string, "F4" or "MGB"
Outputs:
- the ideal defining the closure of the image of Phi; the calculation passes through groebnerBasis(...,Strategy=>"F4") or groebnerBasis(...,Strategy=>"MGB").

See also

image(RationalMap) -- closure of the image of a rational map
image(RationalMap,ZZ) -- closure of the image of a rational map
groebnerBasis -- Gröbner basis, as a matrix

Ways to use this method:

image(RationalMap,String) -- closure of the image of a rational map using the F4 algorithm (experimental)