Overview

This new volume on logic follows a recognizable format that deals in turn with the topics of mathematical logic, moving from concepts, via definitions and inferences, to theories and axioms. However, this fresh work offers a key innovation in its ‘pyramidal’ graph system for the logical formalization of all these items. The author has developed this new methodology on the basis of original research, traditional logical instruments such as Porphyrian trees, and modern concepts of classification, in which pyramids are the central organizing concept. The pyramidal schema enables both the content of concepts and the relations between the concept positions in the pyramid to be read off from the graph. Logical connectors are analyzed in terms of the direction in which they connect within the pyramid. Additionally, the author shows that logical connectors are of fundamentally different types: only one sort generates propositions with truth values, while the other yields conceptual  expressions or complex concepts. On this basis, strong arguments are developed against adopting the non-discriminating connector definitions implicit in Wittgensteinian truth-value tables. Special consideration is given to mathematical connectors so as to illuminate the formation of concepts in the natural sciences. To show what the pyramidal method can contribute to science, a pyramid of the number concepts prevalent in mathematics is constructed. The book also counters the logical dogma of ‘false’ contradictory propositions and sheds new light on the logical characteristics of probable propositions, as well as on syllogistic and other inferences.

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9789401784443

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Prof. Lutz Geldsetzer is Professor Emeritus of Philosophy at the Heinrich-Heine Universitaet in Duesseldorf, Germany, where he has taught since 1963 and where from 1971 to 2002 he directed the research department  for general theory of science in the Institute of Philosophy. In 1970, he co-founded the internationally recognized Journal for General Philosophy of Science/Zeitschrift fuer allgemeine Wissenschaftstheorie which he co-edited until 2009. He has published books and articles on a wide range of philosophical topics, and edited several series of philosophical dictionaries, classics in various areas including hermeneutics, and specialized bibliographies. He has been a visiting professor at universities in the United States, the People's Republic of China, Italy, France and Germany. He studied Philosophy, Social Sciences, Law and Languages at the Johannes-Gutenberg Universitaet in Mainz, Germany, where he received his Ph.D. in 1961, and did postgraduate work at the Sorbonne in Paris in 1961-62.

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