LeviCivitaTensor
LeviCivitaTensor[d] gives the d-dimensional Levi-Civita totally antisymmetric tensor.
Examples
3D Levi-Civita tensor:
LeviCivitaTensor[3]2D case:
LeviCivitaTensor[2] // Normal
(* {{0, 1}, {-1, 0}} *)Please visit the official Wolfram Language Reference for more details.