The positive semidefinite cone `$S^{n}_{+}$` is the cone consisting of
all symmetric positive-semidefinite matrices (as a subset of
`$\mathbb{R}^{n \times n}$`
The positive semidefinite cone `$S^{n}_{+}$` is the cone consisting of
all symmetric positive-semidefinite matrices (as a subset of
`$\mathbb{R}^{n \times n}$`