Weyl’s Predicative Classical Mathematics as a Logic-Enriched Type Theory -- Crafting a Proof Assistant -- On Constructive Cut Admissibility in Deduction Modulo -- Fast Reflexive Arithmetic Tactics the Linear Case and Beyond -- Combining de Bruijn Indices and Higher-Order Abstract Syntax in Coq -- Deciding Equality in the Constructor Theory -- A Formalisation of a Dependently Typed Language as an Inductive-Recursive Family -- Truth Values Algebras and Proof Normalization -- Curry-Style Types for Nominal Terms -- (In)consistency of Extensions of Higher Order Logic and Type Theory -- Constructive Type Classes in Isabelle -- Zermelo’s Well-Ordering Theorem in Type Theory -- A Finite First-Order Theory of Classes -- Coinductive Correctness of Homographic and Quadratic Algorithms for Exact Real Numbers -- Using Intersection Types for Cost-Analysis of Higher-Order Polymorphic Functional Programs -- Subset Coercions in Coq -- A Certified Distributed Security Logic for Authorizing Code.