Diagonal Subalgebras of Residual Intersections

H. Ananthnarayan, Neeraj Kumar, Vivek Mukundan

Let $\mathsf{k}$ be a field, $S$ be a bigraded $\mathsf{k}$-algebra, and $S_{\Delta }$ denote the diagonal subalgebra of $S$ corresponding to $\Delta =\{(cs,es)|s\in \mathbb{Z}\}$. It is k…