Relational languages such as Ruby are used to derive circuits from abstract speci cations of their behaviour. Much reasoning is done informally in Ruby using pictorial representat...
The notion of a bilattice was rst proposed by Ginsberg as a general framework for many applications. This notion was further investigated and applied for various goals by Fitting....
: We give a semantics for a typed object calculus, an extension of System F with object subsumption and method override. We interpret the calculus in a per model, proving the sound...