Figure 1.

Summary of sufficient conditions for a factorization $\mathit{F}=\mathit{PQ}$ to be unique for $d=3$. Axes represent the components of the row vectors of $\mathit{P}$ and the column vectors of $\mathit{Q}$ respectively. (left) Anchor SNPs: there is at least one row of $\mathit{P}$ on each of the red lines. (right) Anchor genotypes: there is at least one column of $\mathit{Q}$ on each of the red dots.