Proper moduli spaces of isolated non-normal singularities

Jiucheng Dai, Daniel Halpern-Leistner, Mingjun Sun +2

We study the moduli of isolated non-normal singularities by introducing the functor ${\mathrm{Crimp}}_S^d(X)$ of crimpings of $(X\to S)$ corank $d$. This globalizes Ishii's moduli f…