is Professor for Philosophy at the Institute for Philosophy of the Freie Universität Berlin. Her research is focused on 17th-century mathematics and rationalism, the philosophy of culture, the theory of cultural techniques: writing, diagrams and cartography. Since 2008 she has held the chair of the Graduate School »Notational Iconicity. On materiality, perceptibility and operativity of notations« at the Freie Universität Berlin.