The problem of mathematics in critical theory -- The trouble with logical positivism : Horkheimer, Adorno, and the origins of critical theory -- The philosophy of mathematics : privation and representation in Gershom Scholem's negative aesthetics -- Infinitesimal calculus : subjectivity, motion, and Franz Rosenzweig's Messianism -- Geometry : projection and space in Siegfried Kracauer's aesthetics of theory -- Who's afraid of mathematics? : critical theory in the digital age.