ensor_doc.html">Tucker Tensors</a>
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%
% Tucker format is a decomposition of a tensor X as the product of a core
% tensor G and matrices (e.g., A,B,C) in each dimension. In other words, a
% tensor X is expressed as:
% 
% $${\mathcal X} = {\mathcal G} \times_1 A \times_2 B \times_2 C$$
% 
% In MATLAB notation, |X=ttm(G,{A,B,C})|. The |ttensor| class stores the
% components of the tensor X and can perform many operations, e.g., |ttm|,
% without explicitly forming the tensor X.
%% Creating a tte