centeredmatrixfactory | Linear manifold struct. for optimization over matrices with centered cols |

euclideancomplexfactory | Returns a manifold struct to optimize over complex matrices. |

euclideanfactory | Returns a manifold struct to optimize over real matrices. |

shapefitfactory | Linear manifold structure for optimization over the ShapeFit search space |

skewsymmetricfactory | Returns a manifold struct to optimize over k skew-symmetric matrices of size n |

symmetricfactory | Returns a manifold struct to optimize over k symmetric matrices of size n |