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**public sources and our publisher partners.**A microwave-excited light emitting device is provided comprising an electrodeless evacuated discharge lamp containing ionizable elements mounted in the frequency determining resonator of a microwave… Expand

For an n-by-m array with some entries specified and the remainder free to be chosen from a given field, we study the possible ranks occurring among all completions. For any such partial matrix the… Expand

When the matrix A is in companion form, the essential step in solving the Lyapunov equation PA + ATP = −Q involves a linear n × n system for the first column of the solution matrix P. The complex… Expand

We arrive at the de Branges-Rovnyak space D(W) from the point of view of model theory, i. e., as the space associated with a canonical model for a general completely nonunitary contraction operator… Expand

type="main"> The inflow of African migrants into Tel Aviv's southern neighborhoods has aroused much resentment from long-term residents. Contesting the uneven burden sharing, which exacerbates… Expand

Primary subacute epiphyseal osteomyelitis is a rare disease. Owing to its insidious onset, mild symptoms, and inconsistent supportive laboratory data, diagnosis and treatment are usually delayed. The… Expand

A number of problems in the control of linear feedback systems can be reduced to the following: we are given three stable rational matrix functions K, ϕ, ψ of sizes p 1 x q 1, p 1 x q 2 and p 2 x q 1… Expand

Abstract Convex cones of matrices which are closed under matrix inversion are defined, and their structure is studied. Various connections with the algebraic Lyapunov equation of general inertia are… Expand

Abstract In this note it is shown that, for a given partially specified hermitian matrix P, the maximal rank for arbitrary (possibly nonhermitian, complex) completions can be attained by hermitian… Expand

Abstract The real Lyapunov order in the set of real n × n matrices is a relation defined as follows: A ⩽ B if, for every real symmetric matrix S, SB + B t S is positive semidefinite whenever SA + A t… Expand