The warning about over-actuated systems is given because the input/output rectangular matrix transformations
needed in this case may assume a rigid platform.
Mathai, Jacobians of Matrix Transformations
and Functions of Matrix Arguments, World Scientific, 1997.
Many authors have extensively developed the theory of the matrix transformations
between some sequence spaces; we refer the reader to [1-6].
Two notions--one of [sigma]-mean and the other of de la Vallee-Pousin mean--play a very active role in recent research on matrix transformations
1, it is formed a homogeneous matrix transformations
The notion of regularity for two dimensional matrix transformations
was presented by Silverman  and Toeplitz .
Characterisations of classes of matrix transformations
between sequence spaces constitute a wide, interesting and important field in both summability and operator theory.
The Silverman-Toeplitz theorem , , characterizes the regularity of two dimensional matrix transformations
Specific topics include a survey of Kalton's work, twisted dualities in Banach space theory, complexity and homogeneity in Banach spaces, conditions for stochastic integrability in UMD Banach spaces, a new infinite game for Banach spaces with applications, greedy approximation in Banach spaces, Kolmogorov numbers of matrix transformations
, a general Baker super-stability criterion for the D'Alembert functional equation, aspects of probabilistic Littlewood-Paley theory, properties related to the Dauavet property, perturbations of ideal complements and asymptotically transitive Banach spaces.
of [lambda]-boundedness fields of normal matrix methods.
Keywords: Time scales, function spaces, duals, matrix transformations
involving [chi] were characterized by Sridhar  and Sirajiudeen .