Sign up ×
Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. It's 100% free, no registration required.

Let $S=k[x_0,x_1,x_2]$, $k$ an algebraically closed field and $ S_d=k[x_0^d,x_0^{d-1}x_1,\ldots,x_2^{d-1}x_1, x_2^d]$. $\mathbb{P}S_d $ is identified with the projective space $\mathbb{P}^{N_d} $, where $N_d={2+d\choose 2}-1 $. I want to know construction of $\mathbb{P}S_d $.

Thank you.

share|cite|improve this question
The notation is wrong. The correct one is $\mathrm{Proj}$. See and any book introducing algebraic geometry. – Martin Brandenburg Feb 19 '14 at 15:56

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.