Daniel Gratzer

Daniel Gratzer is an Assistant Professor at the Department of Computer Science, Aarhus University. His research focuses on theoretical computer science, particularly in type theory, modal logic, and programming language semantics. He has contributed to foundational work in multimodal type theory, cubical type systems, and separation logic frameworks like Iris. His work often bridges categorical logic, homotopy type theory, and formal verification techniques.

Gratzer's research interests include:

• Dependent and modal type theories
• Formal verification of concurrent systems
• Semantics of programming languages
• Proof assistants and logical frameworks

His recent publications explore topics such as idempotent resources in separation logic, univalent reference types, and proof systems for multimodal logics. Gratzer collaborates on projects like the mitten proof assistant and has developed syntactic/semantic frameworks for categorical type theories.

His work emphasizes foundational formalizations, with contributions to both theoretical results (e.g., normalization proofs, categorical semantics) and practical tools (e.g., Iris implementations).