We present a biorthogonal process for two subspaces of . Applying this process, we derive a matrix inequality, which generalizes the Bauer-Hausdorff inequality for vectors and includes the Wang-IP inequality for matrices. Meanwhile, we obtain its equivalent matrix inequality.
"A Bauer-Hausdorff Matrix Inequality." Abstr. Appl. Anal. 2013 1 - 4, 2013. https://doi.org/10.1155/2013/894824