Compiling Hilbert's epsilon operator
Rustan Leino · EPiC series in computing · 2018
Hilbert's epsilon operator is a binder that picks an arbitrary element from a nonempty set. The operator is typically used in logics and proof engines. This paper contributes a discussion of considerations in supporting this operator in a programming language. More specifically, the paper presents the design choices made around supporting this operator in the verification-aware language Dafny.