Fifth Irvine-London-Munich-PoliMi-Salzburg Conference in Philosophy and Foundations of Physics Dates:June 1-2 2026 Venue:LMU Munich (Munich, Germany) Organizing committee:John Dougherty (LMU), Alexander Franklin (KCL), Eleanor Knox (KCL), Patricia Palacios (Salzburg), Bryan Roberts (LSE), Giovanni Valente (PoliMi), Jim Weatherall (Irvine), Charlotte Werndl (Salzburg) Call for Abstracts: Over the past decades, important contributions to the mathematical and conceptual foundations of physical theories have been made within the philosophical community. Conversely, critical analysis of the formal structures of our best physical theories inform central philosophical concerns, and in some cases new theorems have been proven and new lines of argument developed that are of philosophical significance. This conference series aims to bring together philosophers, physicists, and mathematicians working on such issues. This year’s event will be held on June 1-2 at LMU Munich (Munich, Germany). It will immediately precede a workshop on “Open Systems in Physics” taking place on June 2-3, 2026. Our expected list of workshop speakers includes Siska de Baerdemaeker (Stockholm), Michael Cuffaro (LMU), Alexander Franklin (KCL), Viktoria Kabel (ETH Zurich), Karim Thébault (Bristol), and Charlotte Werndl (Salzburg). Papers on any topic of philosophy and foundations of physics by early career researchers, especially graduate students and post-doctoral scholars, will be given priority. Submissions by scholars under-represented within the philosophy and foundations of physics community are especially encouraged. Abstracts no longer than 1000 words should be submitted via https://app.oxfordabstracts.com/stages/80636/submitter <https://app.oxfordabstracts.com/stages/80636/submitter>by 1 March 2026. Decisions will be communicated soon after. The ILMPS conference 2026 and the workshop on “Open Systems in Physics” are financially supported by the Postdoc Support Fund at LMU Munich. ILMPS website: https://ilmpsnetwork.wordpress.com/