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asked 6 years ago

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codimension of an ideal or free submodule

Is there an option to calculate the codimension of an ideal or submodule in Sage. For example, I have the following ideal

I=(1+x+y+xy,1+y+z+yz,1+x+z+xz)

in Z2[x,y,z] or the following free submodule

\begin{align} \left(0001+x+y+xy1+y+z+yz1+x+z+xz1+z1+x000001+x1+y000

\right) \end{align}

in (Z2[x,y,z])3

where Z2[x,y,z]3 is a polynomial ring in variables x,y,z over field F2.

codimension of an ideal or free submodule

Is there an option to calculate the codimension of an ideal or submodule in Sage. Sage? For example, I have the following ideal

I=(1+x+y+xy,1+y+z+yz,1+x+z+xz)I=(1+xy,x+y)

in Z2[x,y,z] or the following free submodule

\begin{align} \left(0001+x+y+xy1+y+z+yz1+x+z+xz1+z1+x000001+x1+y000

\right) \end{align}

in (Z2[x,y,z])3

where Z2[x,y,z]3 Z2[x,y] which is a polynomial ring in variables x,y,z over the field F2.Z2.

codimension of an ideal or free submodule

Is there an option to calculate the codimension of an ideal Sage? For example, I have the following ideal

I=(1+xy,x+y)

in Z2[x,y] which is a polynomial ring over the field Z2.Z2. How do I calculate the codimension for this simple example? I would like to generalize to free submodules if possible