This edited book brings together research work in the field of constructive semantics with scholarship on the phenomenological foundations of logic and mathematics. It addresses one of the central issues in the epistemology and philosophy of mathematics, namely the relationship between phenomenological meaning constitution and constructive semantics. Contributing authors explore deep structural connections and fundamental differences between phenomenology and constructivism. Papers are drawn from contributions to a prestigious workshop held at the University of Friedrichshafen. Readers will discover insight into structural connections between the phenomenological concept of meaning constitution and constructivist concepts of meaning. Discussion ranges from more specific conceptualizations in the philosophy of logic and mathematics to more general considerations in epistemology, inferential semantics and phenomenology. Questions such as a possible phenomenological understanding of the relationship between structural rules and particle rules in dialogical logic are explored. Significant aspects of both phenomenology and dialectics, and dialectics and constructivism emerge. Graduates and researchers of philosophy, especially logic, as well as scholars of mathematics will all find something of interest in the expert insights presented in this volume.

This volume contains papers from the North American Process Algebra Workshop, held in Stony Brook, New York, 28 August 1992. This was the first in a proposed series of workshops, intended to increase awareness of process algebras in the United States and Canada, and to promote their use and development. The workshop was held simultaneously with CONCUR 92, the annual conference on concurrency theories. It provided an important forum for the discussion and exchange of ideas, and allowed recent developments in the application of algebraic techniques to concurrency theory to be presented. The resulting volume provides a good cross-section of current research work in Canada, USA and Europe. Among the specific topics covered are: real-time calculi and expansion theorems; modal logics in timed process algebra; process communication environment; a process calculus with incomparable priorities; exception handling in process algebra; bisimulations on observation structures; computing ready simulations efficiently; analysis of value-passing CCS agents with infinite sorts; an extension of the testing method for processes passing infinite values; constructive semantics; a causality-based semantics for CCS. NAPAW 92 provides an comprehensive overview of this important, up-and-coming area of computer science. It will provide essential reading for both postgraduate students and researchers in industry and academia.

proceedings of the symposium. Somecontributorswereunabletoattendthe event.

Develops a new logic paradigm which emphasizes evidence tracking, including theory, connections to other fields, and sample applications.

This title, first published in 1988, is an inquiry into the nature of predication in natural language. The study is based on the hypothesis that infinitives and gerunds are not clausal or propositional constructions and attempts to provide support for such a hypothesis, whilst also drawing from analysis of various anaphoric phenomena. This title will be of interest to students of language and linguistics.

The papers in this volume accepted for the conference on foundations of software technology and theoretical computer science project research results in - Algorithmics: design and analysis of graph, geometric, algebraic and VLSI algorithms; data structures; average analysis; complexity theory; parallel parsing. - Concurrency: algebraic semantics, event structures. - Logic programming: algebraic properties, semantics. - Software technology: program transformations, algebraic methods. These results together with the formal techniques employed to present them reflect current trends pursued by leading research groups around the world. The papers treat their topics in depth by carefully reviewing existing results, developing and demonstrating new techniques and suggesting further directions for research.

The book is about logical analysis of natural language. Since we humans communicate by means of natural language, we need a tool that helps us to understand in a precise manner how the logical and formal mechanisms of natural language work. Moreover, in the age of computers, we need to communicate both with and through computers as well. Transparent Intensional Logic is a tool that is helpful in making our communication and reasoning smooth and precise. It deals with all kinds of linguistic context in a fully compositional and anti-contextual way.

This volume is dedicated to Prof. Dag Prawitz and his outstanding contributions to philosophical and mathematical logic. Prawitz's eminent contributions to structural proof theory, or general proof theory, as he calls it, and inference-based meaning theories have been extremely influential in the development of modern proof theory and anti-realistic semantics. In particular, Prawitz is the main author on natural deduction in addition to Gerhard Gentzen, who defined natural deduction in his PhD thesis published in 1934. The book opens with an introductory paper that surveys Prawitz's numerous contributions to proof theory and proof-theoretic semantics and puts his work into a somewhat broader perspective, both historically and systematically. Chapters include either in-depth studies of certain aspects of Dag Prawitz's work or address open research problems that are concerned with core issues in structural proof theory and range from philosophical essays to papers of a mathematical nature. Investigations into the necessity of thought and the theory of grounds and computational justifications as well as an examination of Prawitz's conception of the validity of inferences in the light of three “dogmas of proof-theoretic semantics” are included. More formal papers deal with the constructive behaviour of fragments of classical logic and fragments of the modal logic S4 among other topics. In addition, there are chapters about inversion principles, normalization of p roofs, and the notion of proof-theoretic harmony and other areas of a more mathematical persuasion. Dag Prawitz also writes a chapter in which he explains his current views on the epistemic dimension of proofs and addresses the question why some inferences succeed in conferring evidence on their conclusions when applied to premises for which one already possesses evidence.