The Fourth Scandinavian Logic Symposium and the First Soviet-Finnish Logic Conference were held in JyvaskyIa, Finland, June 29-July 6, 1976. The Conferences were organized by a committee which consisted of the editors of the present volume. The Conferences were supported financially by the Ministry of Education of Finland, by the Academy of Finland, and by the Division of Logic, Methodology, and Philosophy of Science of the International Union of History of Science. The Philosophical Society of Finland and the Jyvaskyla Summer Festival gave valuable help in various practicalities. 35 papers...

In 1936, G. Birkhoff and J. v. Neumann published an article with the title The logic of quantum mechanics'. In this paper, the authors demonstrated that in quantum mechanics the most simple observables which correspond to yes-no propositions about a quantum physical system constitute an algebraic structure, the most important proper ties of which are given by an orthocomplemented and quasimodular lattice Lq. Furthermore, this lattice of quantum mechanical proposi tions has, from a formal point of view, many similarities with a Boolean lattice L8 which is known to be the lattice of classical...

The subject of the following study is theories of memory. The first part is a study of one broad type of theory which is very widely adhered to at this time. It enjoys great popularity among neuro physiologists, neuropsychologists, and, more generally, among scientifically oriented people who have directed their attention to questions about memory. Further, this way of looking at the matter is not confined to scientific professionals. Indeed, we can find popularized versions of the view in magazines like Time and Reader's Digest. So in the first part of the book, I will give a presentation of...

No discipline has been more praised or more criticized than the writing of history. Cioero claimed that history teaches men how to live. Aris totle denied it the very name of science and regwded poetry as the higher wisdom. At various times history has been assigned a command ing or a demeaning statIUs in the hierarchy of sciences. Today one can admire the increasing precision and sophistication of the methods used by historia: ns. On the other hand, Thucydides' History of the PeZo ponesian War still serves as the ideal model of how to reconstruct the historical past. Even those who deny the...

These two volumes contain all of my articles published between 1956 and 1975 which might be of interest to readers in the English-speaking world. The first three essays in Vol. 1 deal with historical themes. In each case I as far as possible, meets con have attempted a rational reconstruction which, temporary standards of exactness. In The Problem of Universals Then and Now some ideas of W.V. Quine and N. Goodman are used to create a modern sketch of the history of the debate on universals beginning with Plato and ending with Hao Wang's System L. The second article concerns Kant's Philosophy...

These two volumes contain all of my articles published between 1956 and 1975 which might be of interest to readers in the English-speaking world. The first three essays in Vol. 1 deal with historical themes. In each case I have attempted a rational reconstruction which, as far as possible, meets con temporary standards of exactness. In The Problem of Universals Then and Now some ideas of W.V. Quine and N. Goodman are used to create a modem sketch of the history of the debate on universals beginning with Plato and ending with Hao Wang's System: E. The second article concerns Kant's Philosophy...

Proceedings of the Conference for Formal Methods in the Methodology of Emperical Sciences, Warsaw, June 17-21, 1974, Poland.

1. A WORD ABOUT PRESUPPOSITIONS This book is addressed to philosophers, and not necessarily to those philosophers whose interests and competence are largely mathematical or logical in the formal sense. It deals for the most part with problems in the theory of partial judgment. These problems are naturally formulated in numerical and logical terms, and it is often not easy to formulate them precisely otherwise. Indeed, the involvement of arithmetical and logical concepts seems essential to the philosophies of mind and action at just the point where they become concerned with partial judgment...

This book presents a unified and systematic philosophical account of human actions and their explanation, and it does it in the spirit of scientific realism. In addition, various other related topics, such as psychological concept formation and the nature of mental events and states, are dis cussed. This is due to the fact that the key problems in the philosophy of psychology are interconnected to a high degree. This interwovenness has affected the discussion of these problems in that often the same topic is discussed in several contexts in the book. I hope the reader does not find this too...

This book is intended as a contribution to the foundations of the sciences of man, especially the social sciences. It has been argued with increasing frequency in recent years that the vocabulary of social science is to a large extent an action vocabulary and that any attempt to systematize concepts and establish bases for understanding in the field cannot, therefore, succeed unless it is firmly built on action theory. I think that these claims are sub stantially correct, but at the same time it seems to me that action theory, as it is relevant to social science, still awaits vital...