Fitting and Mendelsohn offer an in-depth exploration of first-order modal logic, utilizing possible world models, tableau proofs, and philosophical discussions. Key topics include quantification, equality, existence, non-rigid constants, predicate abstraction, and definite descriptions, addressing significant philosophical issues.
The book delves into Frege's philosophical exploration of language metaphysics as presented in "On Sense and Reference." It examines his theories on meaning, reference, and the distinction between sense and reference, highlighting their implications for understanding language and thought. The analysis provides insights into how Frege's ideas have influenced contemporary philosophy and linguistics, emphasizing the significance of his work in addressing foundational questions about meaning and communication.