Invited Talks -- Abstract Scalars, Loops, and Free Traced and Strongly Compact Closed Categories -- Labels from Reductions: Towards a General Theory -- Adequacy for Algebraic Effects with State -- Contributed Papers -- Bisimilarity Is Not Finitely Based over BPA with Interrupt -- Algebra ? Coalgebra = Presheaves -- Strong Splitting Bisimulation Equivalence -- Complete Axioms for Stateless Conne…