Shawn Standefer is an Assistant Professor of Philosophy at North Carolina State University. He is a co-author of Logical Methods (2023) and co-editor of New Directions in Relevant Logic (2025).

'This book is a real achievement! It explains the proof methods, semantical theories, and the latest results in the field, and the author puts forward his own view of relevant logic. It's constructed in such a way that it can be taught at various levels, and it's an excellent reference work as well as a fantastic teaching tool.' Edwin Mares, Victoria University of Wellington

• 1. The heart of logic; Part I. Foundations: 2. Axioms; 3. Frame theory; 4. Metatheory: Soundness and completeness; 5. Matrices; Part II. Modality; 6. Modal extensions; 7. Modal frames; 8. Applications of modal logics; 9. Metavaluations; 10. Connectives; Part III. Quantification; 11. Quantifiers; 12. Identity; 13. Varia.

Shawn Standefer is an Assistant Professor of Philosophy at North Carolina State University. He is a co-author of Logical Methods (2023) and co-editor of New Directions in Relevant Logic (2025).

'This book is a real achievement! It explains the proof methods, semantical theories, and the latest results in the field, and the author puts forward his own view of relevant logic. It's constructed in such a way that it can be taught at various levels, and it's an excellent reference work as well as a fantastic teaching tool.' Edwin Mares, Victoria University of Wellington

• 1. The heart of logic; Part I. Foundations: 2. Axioms; 3. Frame theory; 4. Metatheory: Soundness and completeness; 5. Matrices; Part II. Modality; 6. Modal extensions; 7. Modal frames; 8. Applications of modal logics; 9. Metavaluations; 10. Connectives; Part III. Quantification; 11. Quantifiers; 12. Identity; 13. Varia.

Shawn Standefer is an Assistant Professor of Philosophy at North Carolina State University. He is a co-author of Logical Methods (2023) and co-editor of New Directions in Relevant Logic (2025).

'This book is a real achievement! It explains the proof methods, semantical theories, and the latest results in the field, and the author puts forward his own view of relevant logic. It's constructed in such a way that it can be taught at various levels, and it's an excellent reference work as well as a fantastic teaching tool.' Edwin Mares, Victoria University of Wellington

• 1. The heart of logic; Part I. Foundations: 2. Axioms; 3. Frame theory; 4. Metatheory: Soundness and completeness; 5. Matrices; Part II. Modality; 6. Modal extensions; 7. Modal frames; 8. Applications of modal logics; 9. Metavaluations; 10. Connectives; Part III. Quantification; 11. Quantifiers; 12. Identity; 13. Varia.