2 problems

Stability of subrank under field extensions. There exists a polynomial $\psi$ of degree at most $d-1$ such that, for every field $\mathbb{K}$ and every tensor…

Polynomial bound for geometric rank in terms of subrank. There exists a polynomial $\varphi$ of degree at most $d-1$ such that, for every field $\mathbb{K}$ and every tensor…