Excerpt from On the Conditioning of Pole Assignment If (a, B) is t controllable, we will show'that the S, will generally lie in a certain n-r dimensional subspace of twigs fiiet'tae will also lie in this subspace. Therefore X, whose columns are the x, will be singultr with rank at most n-r. This is ather way. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art techlogy to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.