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On quadratic Hurwitz forms. I. (English) Zbl 0457.15016

MSC:
15A63 Quadratic and bilinear forms, inner products
94C99 Circuits, networks
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References:
[1] N. K. Bose: Problems and Progress in Multidimensional Systems Theory. Proc. IEEE, Vol. 65, No. 6, June 1977, pp. 824-840.
[2] M. Fiedler: Private communication, 1979. · Zbl 0431.15005
[3] J. Gregor: Multivariable positive real functions. Res. Rep. III-3-1/3, 1978
[4] T. Koga: Synthesis of finite passive N-ports with prescribed positive real matrices of several variables. IEEE Trans, on Circuit Th., Vol. CT-15, No. 1, March 1968, pp. 2-23.
[5] M. A. Lavrentyev B. V. Shabat: Methods of the Theory of Functions of a Complex Variable. (in Russian). FIZMATGIZ, Moscow 1958.
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