- Syntax of IEL
- Natural Deduction for IEL
- Embedding IEL into IPC
- Shallow Embedding type-based nd into Coq
- Classical Strong Completeness
- Constructive Strong Quasi-Completeness
- Sequent Calculus for IEL
- Decidability of IEL
- Permutation-based Cut-Elimination for IEL
- Structural Properties for Permutation-based sequent calculi
- Case study: The classical modal logic K
- Permutation Based Cut-elimination for K
- Additional Lemmas about Permutations
- IEL and the knowability paradox
- Miscellaneous