I am wondering if there exists a formula for cross product of two vectors in seven dimensions in general curvilinear coordinates. According to Wikipedia cross product only makes sense in 3D and 7D. For two vectors ($\vec{a}$ and $\vec{b}$) in three dimensions the formula is:
$\vec{a}\times\vec{b}=\sqrt{\det{g}}\:\varepsilon_{ijk}\:a^i\:b^j\:\vec{e}^k$
where:
- $\det{g}$ is determinant of metric tensor
- $\varepsilon_{ijk}$ is Levi-Civita symbol
- $a^i$ is i-th contravariant component of vector $\vec{a}$
- $b^j$ is j-th contravariant component of vector $\vec{b}$
- $\vec{e}^k$ is k-th contravariant basis vector
Is there a similar formula for 7D?