All Questions

I want to understand the existence of the Drinfeld shtuka function but unfortunately I know very little in algebraic geometry. I am reading Shtukas and Jacobi sums from D. Thakur and I am stucked at ...

Let $X\rightarrow Y$ a ramifield double cover of curves, $J_X, J_Y$ their jacobians, $P\subset J_X$ the Prym variety, for any line bundle $L$ on $X$ of degree $g_X-1$, denote by $\Theta_L$ the ...