Seventeen specially written essays by eminent philosophers and linguists appear for the first time in this anthology, all with the central theme of logical form -- a fundamental issue in analytic philosophy and linguistic theory. Logical Form and Language brings together exciting new contributions from diverse points of view, which illuminate the lively current debate about this topic.

"This book represents a continuation of the research project in philosophy of language and semantics represented in the journal "Protosociology" at the J. W. ...

Giuseppe Gallis konsequentes Streben nach einer angemessenen Berücksichtigung beider Pole, des Subjektpols ebenso wie des Objektpols, sowohl in der Forschung als auch in allen Bereichen des menschlichen Lebens kommt im vorliegenden Sammelband in allen Arbeiten zum Tragen. Galli eröffnet damit auch neue Felder f8r die gestalttheoretische Forschungs- und Anwendungspraxis. Er erschließt Themen, die nicht zuletzt auch f8r die medizinischen, philosophischen, psychologischen und psychotherapeutischen Aufgabenstellungen zentral sind. Er plädiert nicht nur allgemein für einen dialogischen Ansatz in der zwischenmenschlichen Begegnung, er führt (...) in einer Reihe von Aufsätzen in diesem Sammelband auch sehr konkret die Fruchtbarkeit eines solchen Dialogs mit der Gedankenwelt eines Norbert Elias, Szvetan Todorovic und Paul Ricoeur für eine Bereicherung und Weiterentwicklung der Gestalttheorie vor Augen. (shrink)

Many of the things we do, we do together with other people. Think of carpooling and playing tennis. In the past two or three decades it has become increasingly popular to analyze such collective actions in terms of collective intentions. This volume brings together ten new philosophical essays that address issues such as how individuals succeed in maintaining coordination throughout the performance of a collective action, whether groups can actually believe propositions or whether they merely accept them, and what kind (...) of evidence, if any, disciplines such as cognitive science and semantics provide in support of irreducibly collective states.The theories of the Big Four of collective intentionality -- Michael Bratman, Raimo Tuomela, John Searle, and Margaret Gilbert -- and the Big Five of Social Ontology -- which in addition to the Big Four includes Philip Pettit -- play a central role in almost all of these essays. Drawing on insights from a wide range of disciplines including dynamical systems theory, economics, and psychology, the contributors develop existing theories, criticize them, or provide alternatives to them.Several essays challenge the idea that there is a straightforward dichotomy between individual and collective level rationality, and explore the interplay between these levels in order to shed new light on the alleged discontinuities between them. These contributions make abundantly clear that it is no longer an option simply to juxtapose analyses of individual and collective level phenomena and maintain that there is a discrepancy. Some go as far as arguing that on closer inspection the alleged discontinuities dissolve. (shrink)

The goal of this paper is to answer the following question: Does it make sense to speak of thought experiments not only in physics, but also in mathematics, to refer to an authentic type of activity? One may hesitate because mathematics as such is the exercise of reasoning par excellence, an activity where experience does not seem to play an important role. After reviewing some results of the research on thought experiments in the natural sciences, we turn our attention to (...) experiments and thought experiments in mathematics, especially in fundamental mathematics, and investigate what thought experiments can teach us there. If we accept the principle that mathematical practice can sometimes be best described by a pragmatist approach where the concept of experience in mathematics is considered from a new perspective, thought experiments can in some cases be a useful instrument different from both ‘mathematical experiments’ and ‘formal’ proofs: they are mathematical experiments using deviant methods. (shrink)

This open access book examines the many contributions of Paul Lorenzen, an outstanding philosopher from the latter half of the 20th century. It features papers focused on integrating Lorenzen's original approach into the history of logic and mathematics. The papers also explore how practitioners can implement Lorenzen’s systematical ideas in today’s debates on proof-theoretic semantics, databank management, and stochastics. Coverage details key contributions of Lorenzen to constructive mathematics, Lorenzen’s work on lattice-groups and divisibility theory, and modern set theory and Lorenzen’s (...) critique of actual infinity. The contributors also look at the main problem of Grundlagenforschung and Lorenzen’s consistency proof and Hilbert’s larger program. In addition, the papers offer a constructive examination of a Russell-style Ramified Type Theory and a way out of the circularity puzzle within the operative justification of logic and mathematics. Paul Lorenzen's name is associated with the Erlangen School of Methodical Constructivism, of which the approach in linguistic philosophy and philosophy of science determined philosophical discussions especially in Germany in the 1960s and 1970s. This volume features 10 papers from a meeting that took place at the University of Konstanz. (shrink)

ArgumentAccording to Hermann von Helmholtz, free mobility of bodies seemed to be an essential condition of geometry. This free mobility can be interpreted either as matter of fact, as a convention, or as a precondition making measurements in geometry possible. Since Henri Poincaré defined conventions as principles guided by experience, the question arises in which sense experiential data can serve as the basis for the constitution of geometry. Helmholtz considered muscular activity to be the basis on which the form of (...) space could be construed. Yet, due to the problem of illusion inherent in the subject’s self-assessment of muscular activity, this solution yielded new difficulties, in that if the manifold is abstracted from rigid bodies which serve as empirical justification of the geometrical notion of space, then illusionary bodies will produce fictive manifolds. The present article is meant to disentangle these difficulties. (shrink)

The main thesis of the article is that one’s responsibility to render assistance is not affected by having contributed to the situation by causing harm. I examine ways in which contribution to need is morally significant. Although contribution is relevant with regard to certain features, such as questions of blame, compensation, and fair distribution of the cost of assistance, I argue that contribution should carry no weight when assessing our duty to assist people in severe need if we can do (...) so at little cost. If this is true we have reason to suspect that it is redundant to know whether or not we have in fact contributed to the need of the global poor when assessing our duty to address global poverty. (shrink)

In this paper first order theories for nonmonotone inductive definitions are introduced, and a proof-theoretic analysis for such theories based on combined operator forms a la Richter with recursively inaccessible and Mahlo closure ordinals is given.