This volume provides an articulate restatement of many of the themes of Husserlian phenomenology.

The paper applies the theory presented in A Formal Ontology of Situations (this journal, vol. 41 (1982), no. 4) to obtain a typology of metaphysical systems by interpreting them as different ontologies of situations. Four are treated in some detail: Hume's diachronic atomism, Laplacean determinism, Hume's synchronic atomism, and Wittgenstein's logical atomism. Moreover, the relation of that theory to the situation semantics of Perry and Barwise is discussed.

A generalized Wittgensteinian semantics for propositional languages is presented, based on a lattice of elementary situations. Of these, maximal ones are possible worlds, constituting a logical space; minimal ones are logical atoms, partitioned into its dimensions. A verifier of a proposition is an elementary situation such that if real it makes true. The reference (or objective) of a proposition is a situation, which is the set of all its minimal verifiers. (Maximal ones constitute its locus.) Situations are shown to form (...) a Boolean algebra, and the Boolean set algebra of loci is its representation. Wittgenstein's is a special case, admitting binary dimensions only. (shrink)

The general aim of this book is to provide an elementary exposition of some basic concepts in terms of which both classical and non-dassicallogirs may be studied and appraised. Although quantificational logic is dealt with briefly in the last chapter, the discussion is chiefly concemed with propo gjtional cakuli. Still, the subject, as it stands today, cannot br covered in one book of reasonable length. Rather than to try to include in the volume as much as possible, I have put (...) emphasis on some selected topics. Even these could not be roverrd completely, but for each topic I have attempted to present a detailed and precise t’Xposition of several basic results including some which are non-trivial. The roots of some of the central ideas in the volume go back to J. Luka siewicz’s seminar on mathematicallogi. (shrink)

From the reviews: "A good textbook can improve a lecture course enormously, especially when the material of the lecture includes many technical details. Van Dalen's book, the success and popularity of which may be suspected from this steady interest in it, contains a thorough introduction to elementary classical logic in a relaxed way, suitable for mathematics students who just want to get to know logic. The presentation always points out the connections of logic to other parts of mathematics. The reader (...) immediately see the logic is "just another branch of mathematics" and not something more sacred." Acta Scientiarum Mathematicarum, Hungary. (shrink)

Summary of the talk given to the 22nd Conference on the History of Logic, Cracow (Poland), July 5–9, 1976.

This essay explores an ideal notion of form (mathematical structure) that embraces logical, phenomenological, and ontological form. Husserl envisioned a correlation among forms of expression, thought, meaning, and object—positing ideal forms on all these levels. The most puzzling formal entities Husserl discussed were those he called ‘manifolds’. These manifolds, I propose, are forms of complex states of affairs or partial possible worlds representable by forms of theories (compare structuralism). Accordingly, I sketch an intentionality-based semantics correlating these four Husserlian levels of (...) form—thereby integrating logic, phenomenology, and ontology. (shrink)

This essay is a study of Edmund Husserl’s conception of meaning. In this first section we indicate its importance for his conception of phenomenology. In Section 2 we see that Husserl’s conception of linguistic meaning, of its nature as “ideal” and its role in mediating reference, is almost exactly that of his contemporary Gottlob Frege. In Sections 3 and 4 we further argue that, for Husserl, linguistic meaning and noematic Sinn are one and the same. For, according to Husserl, every (...) linguistic meaning is a noematic Sinn expressed, and every noematic Sinn is in principle expressible and therefore a linguistic meaning. Section 3 argues the former; Section 4, the latter. (shrink)

Analytical philosophy begins with the first mathematical and philosophical works of Bolzano published between 1804 and 1817. There, Bolzano set out a project for the global reform of mathematics by means of the axiomatic method. Having completed the Wissenschaftslehre, Bolzano wrote a summary of his logic for the Größenlehre, which he sent to Exner in 1833. The correspondence between Bolzano and Exner covered some of the main subjects treated by analytical philosophy: the status of abstract objects (propositions and objective ideas), (...) intuitions, objectless ideas, the concept of object and many others. While Bolzano argued in favor of abstract entities independent of mind and of language, Exner considered them as abstractions obtained from the subjective judgments and representations. During the XlXth century, Bolzano's philosophy spread over Bohemia and Austria through manuscripts and through the first edition of Zimmermann's textbook of philosophy. The most important Brentanians, Kerry, Twardowski, Meinong and Husserl, discussed his doctrines which may also have influenced Wittgenstein and the Polish school. (shrink)

Analytical philosophy begins with the first mathematical and philosophical works of Bolzano published between 1804 and 1817. There, Bolzano set out a project for the global reform of mathematics by means of the axiomatic method. Having completed the Wissenschaftslehre, Bolzano wrote a summary of his logic for the Größenlehre, which he sent to Exner in 1833. The correspondence between Bolzano and Exner covered some of the main subjects treated by analytical philosophy: the status of abstract objects (propositions and objective ideas), (...) intuitions, objectless ideas, the concept of object and many others. While Bolzano argued in favor of abstract entities independent of mind and of language, Exner considered them as abstractions obtained from the subjective judgments and representations. During the XlXth century, Bolzano's philosophy spread over Bohemia and Austria through manuscripts and through the first edition of Zimmermann's textbook of philosophy. The most important Brentanians, Kerry, Twardowski, Meinong and Husserl, discussed his doctrines which may also have influenced Wittgenstein and the Polish school. (shrink)

A number of logicians and philosophers have turned their attention in recent years to the problem of developing a logic of interrogatives. Their work has thrown a great deal of light on the formal properties of questions and question-sentences and has led also to interesting innovations in our understanding of the structures of performatives in general and, for example, in the theory of presuppositions. When, however, we examine the attempts of logicians such as Belnap or Åqvist to specify what, precisely, (...) a question is, or what it is to ask or raise a question, then what we are offered is somewhat less illuminating. Two alternative reductionist accounts seem in particular to have gained most favor: questions are identified either as special sorts of statements, or as special sorts of requests. As we hope will become clear in what follows, neither of these accounts is even nearly adequate; and matters are not improved if questions are identified, by force majeure, as combinations of statements and requests. (shrink)

The concept of formal ontology was first developed by Husserl. It concerns problems relating to the notions of object, substance, property, part, whole, predication, nominalization, etc. The idea of formal ontology is present in many of Husserl?s works, with minor changes. This paper provides a reconstruction of such an idea. Husserl?s proposal is faced with contemporary logical orthodoxy and it is presented also an interpretative hypothesis, namely that the original difference between the general perspective of usual model theory and formal (...) ontology is grounded in the fact that this latter starts from an intended interpretation and not from the set of all the possible interpretations. (shrink)

What is the relationship between our perceptions and reality? What is the relationship between the mind and the body? These are questions with which philosophers have grappled for centuries, and they are topics of considerable contemporary debate as well. Hilary Putnam has approached the divisions between perception and reality and between mind and body with great creativity throughout his career. Now, in _The Threefold Cord: Mind, Body, and World,_ he expounds upon these issues, elucidating both the strengths and weaknesses of (...) current schools of thought. With his characteristic wit and acuity, Putnam offers refreshing solutions to some of philosophy's most vexing problems. Putnam first examines the problem of realism: is objective truth possible? He acknowledges the deep impasse between empirical and idealist approaches to this question, critiquing them both, however, by highlighting the false assumption they share, that we cannot perceive the world directly. Drawing on the work of J. L. Austin and William James, Putnam develops a subtle and creative alternative, which he calls "natural realism." The second part of the book explores the mind-body question: is the mind independent of our interactions with the physical world? Again, Putnam critically assesses two sharply antithetical contemporary approaches and finds them both lacking. _The Threefold Cord_ shows the entire mind-body debate to be miscast and draws on the later work of Wittgenstein, once more advancing original views on perception and thought and their relationship with both the body and the external world. Finally, Putnam takes up two related problems--the role of causality in human behavior and whether or not thoughts and sensations have an "existence" all their own. With Putnam's lucid prose and insightful examples, _The Threefold Cord_ loosens the Gordian knots into which philosophy has bound itself over the issue of epistemology. (shrink)

Aristotle’s presentation of ontology advanced at the beginning of the fourth book of Metaphysics is universally known: “there is a science which studies being qua being...”. Needless to say, this is a familiar sentence: unfortunately, it is also quite an odd one. Why Aristotle does not simply say that ontology is the theory of being? Is there any difference between ‘theory of being’ and ‘theory of being qua being’? In brief, the problem is to decide whether the two expressions ‘the (...) study of being’ and ‘the study of being qua being’ are equivalent. If they are, the ‘qua’ does not play any interesting role. On the contrary, if the two expressions are different, that is to say, if there is a difference between the study of being (simpliciter) and the study of being qua being, we should study the role played by the (operator) ‘qua’. (shrink)

This ambitious work aims to shed new light on the relations between Husserlian phenomenology and the present-day efforts toward a scientific theory of cognition—with its complex structure of disciplines, levels of explanation, and ...

Bolzano's Sätze an sich and Frege's Gedanken are obviously close relatives. The paper underlines both similarities and dissimilarities between the psychological and semantical roles assigned to structured truth-evaluable contents in Bolzano's and Frege's theories. In particular, their different accounts of propositional identity are compared, and it is argued that Dummett's recent criticism of Frege's account is grist to Bolzano's mill.

The ideas of the German philosopher and mathematician Gottlob Frege lie at the root of the analytical movement in philosophy. Frege and Other Philosophers comprises all of Professor Dummett's published and previously unpublished essays on Frege, with the exception of those included in his Truth and Other Enigmas. In some of these essays he explores the relation of Frege's ideas to those of his predecessors and contemporaries. In others he considers critically some interpretations of Frege, and develops the argument for (...) a sound understanding of Frege's thought which he first delineated in The Interpretation of Frege's Philosophy. Several of the essays illustrate his contention that Frege's work remains the best starting point for the investigation of problems concerning truth, meaning, thought, and language, which are still among the most contentious issues in modern analytical philosophy. Any discussion of Frege's ideas is therefore also an exploration of fundamental and as yet unresolved issues of philosophy. (shrink)

The ideas of the German philosopher and mathematician Gottlob Frege lie at the root of the analytic movement in philosophy; Michael Dummett is his leading modern critical interpreter and one of today's most eminent philosophers. This volume collects together fifteen of Dummett's classic essays on Frege and related subjects.

Husserls Briefwechsel is von entscheidender Bedeutung für das Verständnis seiner philosophischen Entwicklung, seiner wissenschaftlichen Arbeit und Publikationsvorhaben. Er nimmt darin Stellung zu den politischen Entwicklungen in Deutschland und spricht sich aus über weltanschaulich-religiöse Fragen. Außerdem bestimmt er sein Verhältnis zu anderen Philosophen und Schulen. Die vorliegende, textkritisch konstituierte und reich kommentierte Gesamtausgabe ist nicht nur für Philosophen, Wissenschaftshistoriker und Zeitgeschichtlicher von hohem Interesse. Die Ausgabe umfaßt in sachlicher Gliederung Husserls Korrespondenz (ca. 1300 Einzelstücke) mit über 250 Personen und Instanzen, wobei (...) neben den Briefen Husserls - und, in großzügiger Auswahl, seiner Frau Malvine - auch alle erhaltenen Briefe an Husserl aufgenommen sind (ca. 700 Einzelstücke). Die Bände I--IV orientieren sich an der chronologischen Entwicklung der Husserlschen Philosophie, die Bände V--IX an der sachlichen Nähe der Korrespondenzpartner zu Husserls Philosophie. Band X enthält neben der Einführung in die Ausgabe verschiedene Register zur differenzierten Aufschlüsselung der Ausgabe. Edmund Husserl's correspondence is of eminent importance for a clear understanding of his philosophical development, his scientific work, and his publications. In his letters, he reacts on the political developments in Germany and ponders on the philosophy of life and on religious questions. He also clearly defines his relationships with other philosophers and schools of philosophy. This annotated and richly commented correspondence edition is of vital interest to philosophers, researchers and historians. The ten volumes consist of Husserl's correspondence (about 1300 letters) with more than 250 institutes and persons, and in addition to his letters, the letters of his wife Malvine and those received by both (about 700) are also included. Volumes I--IV present a chronological development of Husserl's philosophical system, Volumes V--IX are devoted to the correspondence partners in philosophy. The last volume consists of an extensive Introduction and a variety of indexes to all volumes in the set. (shrink)

Such a conception, says Dummett, will form "a base camp for an assault on the metaphysical peaks: I have no greater ambition in this book than to set up a base ...

The rift which has long divided the philosophical world into opposed schools-the "Continental" school owing its origins to the phenomenology of Husserl and the "analytic" school derived from Frege-is finally closing.

The intentionality of sensation -- The first person -- Substance -- The subjectivity of sensation -- Events in the mind -- Comments on Professor R.L. Gregory's paper on perception -- On sensations of position -- Intention -- Pretending -- On the grammar of "Enjoy" -- The reality of the past -- Memory, "experience," and causation -- Causality and determination -- Times, beginnings, and causes -- Soft determinism -- Causality and extensionality -- Before and after -- Subjunctive conditionals -- "Under a (...) description" -- Analysis competition--tenth problem -- A reply to Mr. C.S. Lewis's argument that "naturalism" is self-refuting. (shrink)