Dear all, we are very glad to announce the workshop “Arbitrariness and Vagueness in the Philosophy of Logic and Mathematics” that will take place at the Department of Philosophy – University of Vienna, Lecture Room 3A 3rd floor, Universitätsstraße 7, 1010 Vienna, from 13th to 14th April. Virtual Venue: https://univienna.zoom.us/j/68366932623?pwd=YMMs9KbxerhR8oFaNQMiKHdmc3vP0e.1 Confirmed speakers: Pablo Dopico (University of Konstanz), Leon Horsten (University of Konstanz), Andrea Iacona (University of Turin), Hannes Leitgeb (LMU Munich), Friederike Moltmann (CNRS), Matteo Plebani (University of Turin), Fabian Pregel (University of Vienna), Lorenzo Rossi (University of Turin), Pedro Teixeira Yago (SNS Pisa), Elia Zardini (Complutense University of Madrid). More information can be found on the event’s web-page, available at this link: https://sites.google.com/view/arbitrarinessandvagueness/home-page . The workshop is jointly organised by Leon Horsten (University of Konstanz) and the AG Horsten research group, as well as Ludovica Conti (University of Vienna), ESPRIT programme "The Logic of Abstraction", Austrian Science Fund (FWF), DOI: 10.55776/ESP210 For further information, please write to ag-horsten(a)uni-konstanz.de <mailto:ag-horsten@uni-konstanz.de> or to ludovica.conti(a)univie.ac.at <mailto:ludovica.conti@univie.ac.at> . Hope to see you there! Leon Horsten and Ludovica Conti