Arantzazu Saratxaga Arregi is a Basque philosopher and “matrix” researcher. She has a BA in philosophy from the University of Deusto, Bilbao, and graduated with a Master’s degree from the University Pompeu Fabra Barcelona. She completed postgraduate studies in hermeneutics and postmodernism, and is currently a PhD candidate in philosophy and media theory at the University for Arts and Design, Karlsruhe; in her PhD project she is developing a philosophical proposal for a “matrix” theory. Taking as a starting point the semantic root of the term “matrix”—that is, uterus and mother—she tries to locate the ontological difference between both notions. The eidetic difference between what is mother and what is uterus is in sum the difference between what is world and what is not. While the mother is inside the world, the uterus is its exteriority, or its inner fold. Arantzazu draws on numerous contemporary theoretical contributions relating to crisis and trauma on the Earth (“geotrauma”), and the influence of human beings on our geological era (the Anthropocene), and argues that such expressions are manifestations of matricide. She has given lectures and has taken part in seminars in various European countries and has produced Spanish translations of German philosophical writers. She has also taught communication theory at the University of Arts and Applied Sciences, Freiburg.