This book provides new approaches to the debate on individuality and non-individuality in quantum mechanics, with chapters written by leading experts in the field. A significant issue in the philosophy of quantum mechanics, the choice between individuality and non-individuality, and the well-known metaphysical underdetermination between these options in quantum theory, receive here new treatment, including metaphysical, logical, and methodological analyses. Scholars and students engaged in the philosophy of quantum mechanics and the metaphysics of science, as well as philosophers concerned with the impact of quantum mechanics on their disciplines will find this book to not only new proposals and arguments for the various sides of the debate, but also new venues for exploring the subject further.

Autorentext

**Décio Krause is Professor at the Graduate Program of Logic and Metaphysics at the Federal University of Rio de Janeiro, Brazil. His works deal with the logical foundations of science, mainly involving the logical and metaphysical discussions about identity and individuality of quantum entities, and the applications of non-classical logics to the sciences. Prof. Krause pioneered formal work on non-reflexive logics and quasi-set theories. He is a member of the International Academy of Philosophy of Science, located in Brussels, and a researcher of the Brazilian National Council for Scientific and Technological Development (CNPq).

**Jonas R. Becker Arenhart is Associate Professor at the Department of Philosophy of the Federal University of Santa Catarina, Brazil, and researcher of the Brazilian National Council for Scientific and Technological Development (CNPq). His main research interests are focused on the relation between metaphysics and science, philosophy of logic, and logical foundations of science. Methodological aspects of the relation between science and metaphysics are the focus, with special interest is the case of quantum mechanics and the metaphysics of individuality and non-individuality. Also, special focus is given to applications of logic in foundational approaches to science and metaphysics, with emphasis on non-reflexive logics and paraconsistent logics.