Meng's Hessian conjecture
Let k\Bbbkk be a field of characteristic zero and let φ∈k[x1,…,xn]\varphi\in\Bbbk[x_1,\dots,x_n]φ∈k[x1,…,xn]. Write … If detHessφ∈k×\det\operatorname{Hess}\varphi\in\Bbbk^{\times}detHessφ∈k×, the gradient map has a formal…