Antisymmetric
Antisymmetric[{s1, ..., sn}] represents the symmetry of a tensor that is antisymmetric in the slots si.
Examples
Define an antisymmetric tensor:
TensorSymmetry[LeviCivitaTensor[3]]
(* Antisymmetric[{1, 2, 3}] *)Please visit the official Wolfram Language Reference for more details.