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edit approved Oct 22, 2018 at 20:19
Glorfindel
edit approved Oct 22, 2018 at 20:19
Glorfindel
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Given a closed-subscheme (corresponding to the homogeneous ideal I$I$ inside K[x_0,...,x_n]$K[x_0,...,x_n]$) of a projective scheme P^n$\mathbb{P}^n$, how can one find out the blow up using Macaulay2. Proj(reesAlgebra(I)) give? Proj(reesAlgebra(I)) gives the blow-up of I$I$ along with an affine scheme. Is there any function that we can use? orOr we need to do something else.?

Given a closed-subscheme (corresponding to the homogeneous ideal I inside K[x_0,...,x_n]) of a projective scheme P^n how can one find out the blow up using Macaulay2. Proj(reesAlgebra(I)) give the blow-up of I along with an affine scheme. Is there any function that we can use? or we need to do something else.

Given a closed-subscheme (corresponding to the homogeneous ideal $I$ inside $K[x_0,...,x_n]$) of a projective scheme $\mathbb{P}^n$, how can one find out the blow up using Macaulay2? Proj(reesAlgebra(I)) gives the blow-up of $I$ along with an affine scheme. Is there any function that we can use? Or we need to do something else?

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Anko
Anko
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Blow up of a Projective scheme along a projective-subscheme using Macaulay2

Given a closed-subscheme (corresponding to the homogeneous ideal I inside K[x_0,...,x_n]) of a projective scheme P^n how can one find out the blow up using Macaulay2. Proj(reesAlgebra(I)) give the blow-up of I along with an affine scheme. Is there any function that we can use? or we need to do something else.