For these matrices, a decomposition into higher-dimensional invariant subspaces is desirable. In this paper we define a class of matrices where this is true, and propose a technique for calculating ...

Let X, Y be two subspaces of summability domains of matrices with real or complex entries determined by speeds of the convergence, i.e.; by monotonically increasing positive sequences λ and μ. In this ...

Maslov Index: A topological invariant quantifying the winding of Lagrangian subspaces in a symplectic space, essential for analysing stability in Hamiltonian systems.

Vectors, operations on vectors, vector spaces and subspaces, inner product and vector norm, linear dependence and independence, matrices, linear transformations, and orthogonal matrices. System of ...