First-Order Modal Logic
Mendelsohn, Richard L. / Fitting, M.![First-Order Modal Logic](https://support.digitalhusky.com/media/annotations/sorted/168/1688083/CHSBZCOP031688083.jpg)
This is a thorough treatment of first-order modal logic. The book covers such issues as quantification, equality (including a treatment of Frege's morning star/evening star puzzle), the notion of existence, non-rigid constants and function symbols, predicate abstraction, the distinction between nonexistence and nondesignation, and definite descriptions, borrowing from both Fregean and Russellian paradigms.