### Biography

Kenneth Manders (PhD, UC-Berkeley, 1978) is a professor emeritus of philosophy, with former appointments in history and philosophy of science, and as fellow of the Center for Philosophy of Science. He was a fellow of the Institute for Advanced Study in the Behavioral Sciences and NEH fellow, and has held a NATO postdoctoral fellowship in science (at Utrecht), a NSF mathematical sciences postdoctoral fellowship (at Yale), and a Howard Foundation Fellowship. His research interests lie in the philosophy, history, and foundations of mathematics; and in general questions on relations between intelligibility, content, and representational or conceptual casting. He is currently working on a book on geometrical representation, centering on Descartes. He has published a number of articles on philosophy of mathematics, history of mathematics, model theory, philosophy of science, measurement theory, and the theory of computational complexity.

### Select Publications

Manders, K. and L. Adleman. NP-complete decision problems for binary quadratics. *Journal of Computer and System Sciences* 16 (1978), pp. 168-84. Interpretations and the model theory of the classical geometries. In: G. Mueller and M. Richter, eds., *Models and Sets*.* Springer Lecture Notes in Mathematics* 1103 (1984), pp. 297-330. Domain extension and the philosophy of mathematics. *Journal of Philosophy* 86 (1989), pp. 553-62. Diagram-Based Geometric Practice. Chapter 3 in P. Mancosu, ed., The Philosophy of Mathematical Practice. Oxford Univ Pr, 2008, pp. 65–79. The Euclidean Diagram (1995). Chapter 4 in P. Mancosu, ed., The Philosophy of Mathematical Practice. Oxford Univ Pr, 2008, pp. 80–133.