ABSTRACT This article traces shifts in Heidegger's stance toward metaphysics after fundamental ontology and argues that these shifts reflect changes in his conceptions of ontological difference and temporality that pave the way for his mature thought.

Orthologic is defined by weakening the axioms and rules of inference of the classical propositional calculus. The resulting Lindenbaum-Tarski quotient algebra is an orthoimplication algebra which generalizes the author's implication algebra. The associated order structure is a semi-orthomodular lattice. The theory of orthomodular lattices is obtained by adjoining a falsity symbol to the underlying orthologic or a least element to the orthoimplication algebra.

Primarily focused on the theoretical aspects of International Organization, this book provides an in-depth examination of competing theories through thematic chapters. Intended to fill the gap between introductory textbooks and primary sources of theory, International Organization , is useful for upper-level international relations courses with a significant emphasis on theory.