Abstract:1.Es bezeichne % ( E ) bzw. Gm ( E ) die Menge aller linearen stetigen bzw.vollstetigen Operatoren eines (komplexen) BANACH-Raumes E. Wir betrachten in dieser Arbeit operatorwertige Funktionen A (p), die in einer Umgebung des Nullpunktes der komplexen p-Ebene definiert und dort, analytisch sind. Es gibt also eine positive Zahl R 5 00 und eine Operatoren-losbar ist, d. h., wenn die Zahl 1 ein Eigenwert des Operators A ( p u , ) ist. Urn gewisse fur operatorwertige Polynome bekannte Spektralaussagen auch fur den… Show more
“…An old trick in the theory of analytic operator functions is to make a reduction to a linear pencil of the form XS-T or rather XI-T. One approach is modelled after the well-known method of changing a higher order differential equation into a system of first order equations by adding new variables. It has been used to study operator polynomials and even operator power series (see [791,[951,[43], [89]). A second, more sophisticated, approach involves 'linearization by extension' (see [55]).…”
Section: Linearizationmentioning
confidence: 99%
“…Literature: [9], [10], [14], [27], [40], [43], [55], [62], [90 ], [91 ], [94], [95], [97]. 79 88 , (89] Further reading: [3], [11], [12], [16], [ [18] and [24]. The presence of e -itA P…”
The notion of a transfer function from systems theory, serves as an important tool in dealing with certain problems in operator and matrix theory. This is illustrated with a variety of material taken from existing literature. A striking feature of the results is their high degree of explicitness.
“…An old trick in the theory of analytic operator functions is to make a reduction to a linear pencil of the form XS-T or rather XI-T. One approach is modelled after the well-known method of changing a higher order differential equation into a system of first order equations by adding new variables. It has been used to study operator polynomials and even operator power series (see [791,[951,[43], [89]). A second, more sophisticated, approach involves 'linearization by extension' (see [55]).…”
Section: Linearizationmentioning
confidence: 99%
“…Literature: [9], [10], [14], [27], [40], [43], [55], [62], [90 ], [91 ], [94], [95], [97]. 79 88 , (89] Further reading: [3], [11], [12], [16], [ [18] and [24]. The presence of e -itA P…”
The notion of a transfer function from systems theory, serves as an important tool in dealing with certain problems in operator and matrix theory. This is illustrated with a variety of material taken from existing literature. A striking feature of the results is their high degree of explicitness.
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