107 citations · 551 across the 65 of their papers we have counts for
71 papers
The Grassmannian of indefinite subspaces
Rongbiao Thomas Wang, Hongquan Yang, Lek-Heng Lim
The homogeneous space is an object that has received scant a…
Generalized matrix nearness problems II
Rongbiao Thomas Wang, Chi-Kwong Li, Lek-Heng Lim
Given a matrix , a matrix nearness problem seeks an that most closely approximates in the sense of minimizing under a variety of constraints on .…
Linear representations of manifolds
Rongbiao Thomas Wang, Lek-Heng Lim, Ke Ye
A finite-dimensional linear representation of a group or an algebra may be regarded as a map into a space of matrices, endowing abstract elements with coordinates, and encoding alg…
Special orthogonal, special unitary, and symplectic groups as products of Grassmannians
Lek-Heng Lim, Xiang Lu, Ke Ye
We describe a curious structure of the special orthogonal, special unitary, and symplectic groups that has not been observed, namely, they can be expressed as matrix products of th…
Simple matrix models for the flag, Grassmann, and Stiefel manifolds
Lek-Heng Lim, Ke Ye
We derive three families of orthogonally-equivariant matrix submanifold models for the Grassmann, flag, and Stiefel manifolds respectively. These families are exhaustive -- every o…
Minimal equivariant embeddings of the Grassmannian and flag manifold
Lek-Heng Lim, Ke Ye
We show that the flag manifold , with Grassmannian the special case , has an -equivariant e…