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Type firstDescription
Ein alter Beduine erzählt ihm und seinen Freunden eine seltsame Geschichte über eine ferne Höhle
Wirtschaft und Umwelt
9 % in adults and 40
1Entwicklung und Ziele des Personalvermögensansatzes2
Singular Quadratic Forms in Perturbation Theory 87 Ein alter Beduine erzählt ihmThe notion of singular quadratic form appears in mathematical physics as a tool for the investigation of formal expressions corresponding to perturbations devoid of operator sense. Numerous physical models are based on the use of Hamiltonians containing perturba tion terms with singular properties. Typical examples of such expressions are Schrodin ger operators with O potentials ( ~ + AD) and Hamiltonians in quantum field theory with perturbations
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