rs.  More concisely, a symmetric Kruskal tensor decomposition of a tensor <img src="symktensor_doc_eq08497775237003891062.png" alt="$\mathcal{A}$" style="width:10px;height:10px;"> has the following form:</p><p><img src="symktensor_doc_eq04038970227095449752.png" alt="$$\mathcal{A} = \sum_{i=1}^{r} x_{i}^{m}$$" style="width:61px;height:34px;"></p><p>In this notation, a subscript refers to a column index. A superscript refers to  the outer product of a single vector with itself <img src="symktensor_doc_eq1131