Low-Rank Tensor Recovery via Theta Nuclear p-Norm

We investigate the low-rank tensor recovery problem using a relaxation of the nuclear p-norm by theta bodies. We provide algebraic descriptions of the norms and compute their Gröbner bases. Moreover, we develop geometric properties of these bodies. Finally, our numerical results suggest that for $n\times \cdots \times n$ tensors, $m\ge O(n)$ measurements should be sufficient to recover low-rank tensors via theta body relaxation.