Koba-Nielsen factor
= Koba-Nielsen factor
{c}
The <Koba-Nielsen factor> is the product of powers of pairwise worldsheet insertion-point distances produced by contractions of <string vertex operators>.
= Koba-Nielsen factor
{c}
The <Koba-Nielsen factor> is the product of powers of pairwise worldsheet insertion-point distances produced by contractions of <string vertex operators>.