A new formula of the determinant tensor with symmetries

Jeong-Hoon Ju; Taehyeong Kim; Yeongrak Kim

paper

A new formula of the determinant tensor with symmetries

arXiv:2303.07845

Abstract

In this paper, we present a new formula of the determinant tensor $d e t_{n}$ for $n \times n$ matrices. In \cite{kim2023newdet4}, Kim, Ju, and Kim found a new formula of $4 \times 4$ determinant tensor $d e t_{4}$ which is available when the base field is not of characteristic $2$ . Considering some symmetries in that formula, we found a new formula so that \begin{equation*} \operatorname{Crank}(det_n) \leq \operatorname{rank}(det_n) \leq \frac{n!}{2^{\lfloor(n-2)/2 \rfloor}} \end{equation*} when the base field is not of characteristic $2$ .

13 pages