Take the 2-minute tour ×
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 $C$ be a smooth curve. Letting $J$ be its Jacobian, consider the Poincaré bundle $\mathcal P$ on $J\times J$. Let $p: J\times J\rightarrow J$ be the projection. How can I compute the complex $R p_{*} \mathcal P$ in a point $L\in J$, i.e. what explicitly is

$$R p_\ast \mathcal P_L ?$$

share|improve this question
2  
It is usually a bad idea to ask the question here and on MO at the same time. –  Mariano Suárez-Alvarez Sep 12 '11 at 18:02
    
As mentioned at MO: there is more than one projection... –  David Roberts Sep 12 '11 at 22:03
    
say projection onto the first factor. The problem is totally symmetric –  unkn2222 Sep 13 '11 at 13:22

Your Answer

 
discard

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

Browse other questions tagged or ask your own question.