All_inv                 Inverse rearrangement algorithm on all modes
All_rearrange           Rearrangement algorithm on all modes
H_trans                 Mode-k Block-a Block-b transformation matrix
Mcut                    Matrix cutting
obs_ind                 Largest index observed
rearrange               Rearrangement algorithm on mode k
rearrange_inv           Inverse rearrangement algorithm on mode k
refold                  Tensor refolding
ttm                     Mode k product with matrix
unfold                  Tensor unfolding
