b. 1952
Edward Zalta is an American philosopher and senior research scholar at Stanford University, best known for developing axiomatic object theory, which provides a formal framework for reasoning about abstract and possible objects. He is also the founding editor and principal editor of the Stanford Encyclopedia of Philosophy, one of the most important open-access reference works in philosophy.
Developed axiomatic object theory distinguishing encoding from exemplifying properties
Founded and serves as principal editor of the Stanford Encyclopedia of Philosophy
Formalized a comprehensive theory of abstract objects in 'Abstract Objects: An Introduction to Axiomatic Metaphysics' (1983)
Advanced formal treatments of Platonic metaphysics using intensional logic
Contributed to the philosophy of mathematics through object-theoretic foundations
By analogy, simply positing relational tropes does not provide an effective theoretical response to Bradley's argument
claimThe truth of a proposition in a world does not entail that the proposition exists in that world
premiseOrdinary objects are defined as those that might be concrete.
claimPossible objects such as million-carat diamonds and talking donkeys are not abstract.
premisePossible objects are possibly concrete (not necessarily non-concrete).
premiseAbstract objects are defined as objects that are not ordinary.
claimAbstract objects are not possibly concrete.
premiseTherefore, abstract objects, by definition, do not satisfy the condition of possibly being concrete.
premiseAbstract objects are those that couldn't be concrete.
premiseTherefore, possible objects fail to meet the defining condition of abstractness.