linen

Linear(source_irreps, target_irreps, ...)	E3-equivariant linear channel mixing.
LinearIndexwise(source_irreps, ...)	E3-equivariant specie-wise linear mixing.
SymmetricContraction(source_irreps, ...)	Index-wise symmetric contraction B(A, i) = W[i] @ (A + A⊗A + ...).