= Vector of Riemann constants
{title2=$\kappa=\operatorname{AJ}(D_z)-z$}
= Riemann constants
{c}
{synonym}
The vector of <Riemann constants> is the parameter-independent class obtained from the zeros of $p\mapsto\theta(u(p)-z)$ using the displayed formula. Under this sign convention the <theta divisor> is $W_{g-1}-\kappa$. It depends on the base point and normalized symplectic marking; some accounts use its negative. Changing the marking or sign convention must also change the translation formula consistently.
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