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Fig. 1: S-parameter fundamentals. S-parameters describe linear time-invariant (LTI) systems in frequency domain. By linear, we mean commutative, associative, and distributive mechanisms that do not ...
In a recent paper [4] we considered a semigroup of linear contractions or a group of linear isometries in a normed vector space, and obtained sufficient conditions for the orbits to lie on parallel ...
Richard Sinkhorn, Linear Transformations Under Which the Doubly Stochastic Matrices are Invariant, Proceedings of the American Mathematical Society, Vol. 27, No. 2 (Feb., 1971), pp. 213-221 ...
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