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Algebraic Geometry (2nd question)

  1. Nov 11, 2009 #1
    Here is a similar one that again tells me that my undestanding of the notions is still not there. I would like to know why the the polynomials x^2, xy, y^2 generate the the structire sheaf on O_P1 (2).
    Again I have attached the question. Thank you, any help is appreciated

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  3. Nov 11, 2009 #2


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    Isn't [itex]\mathcal{O}_{\mathbb{P}^1}(2)[/itex], by definition, the graded 2 part of the homogeneous coordinate ring?
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