This book treats modal logic as a theory, with several subtheories, such as completeness theory, correspondence theory, duality theory and transfer theory and is intended as a course in modal logic for students who have had prior contact with modal logic and who wish to study it more deeply. It presupposes training in mathematical or logic. Very little specific knowledge is presupposed, most results which are needed are proved in this book.

This book argues that languages are composed of sets of signs, rather than strings . This notion, first posited by de Saussure in the early 20^th century, has for decades been neglected by linguists, particularly following Chomsky s heavy critiques of the 1950s. Yet since the emergence of formal semantics in the 1970s, the issue of compositionality has gained traction in the theoretical debate, becoming a selling point for linguistic theories.

Yet the concept of compositionality itself remains ill-defined, an issue this book addresses. Positioning compositionality as a...

This book argues that languages are composed of sets of signs, rather than strings . This notion, first posited by de Saussure in the early 20^th century, has for decades been neglected by linguists, particularly following Chomsky s heavy critiques of the 1950s. Yet since the emergence of formal semantics in the 1970s, the issue of compositionality has gained traction in the theoretical debate, becoming a selling point for linguistic theories.

Yet the concept of compositionality itself remains ill-defined, an issue this book addresses. Positioning compositionality as a...