Frequency Domain Criteria for Absolute Stability focuses on recently-developed methods of delay-integral-quadratic constraints to provide criteria for absolute stability of nonlinear control systems. The known or assumed properties of the system are the basis from which stability criteria are developed. Through these methods, many classical results are naturally extended, particularly to time-periodic but also to nonstationary systems. Mathematical prerequisites including Lebesgue-Stieltjes measures and integration are first explained in an informal style with technically more difficult proofs presented in separate sections that can be omitted without loss of continuity.
This book studies individual works by twelve major writers of German modernism, including Thomas Mann, Musil, Brecht and Rilke, in relation to the history of the twentieth century. It explores the theme of the 'dear purchase', an ideal of moral strenuousness and sacrifice seen as characteristic of Germany after Nietzsche, and reveals the underlying flaw in this notion as a self-justifying value. In this context, it considers the renaissance of German poetry after 1900, the impact of the War of 1914, its aftermath in uncertainty and relativism, and attitudes to the Hitler period, and finally juxtaposes Mann's Felix Krull and Kafka's story Josephine as a deliverance from the value-system of the title. The Introduction, partly autobiographical, traces J. P. Stern's preoccupation with this interpretation of his material in many of the books he published (especially those concerned with Nietzsche and Hitler), and pays tribute to Wittgenstein's influence on his thinking.
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