The necessary and sufficient condition for CSP noninterference security stated by the Ipurge Unwinding Theorem is expressed in terms of a pair of event lists varying over the set ...
Among the various mathematical tools introduced in his outstanding work on Communicating Sequential Processes, Hoare has defined ”interleaves” as the predicate satisfied by ...
Applicative functors augment computations with effects by lifting function application to types which model the effects [5]. As the structure of the computation cannot depend on...
We provide a framework for registering automatic methods to derive class instances of datatypes, as it is possible using Haskell’s “deriving Ord, Show, . . . ” feature. We f...
The definition of noninterference security for Communicating Sequential Processes requires to consider any possible future, i.e. any indefinitely long sequence of subsequent eve...
Euler’s Partition Theorem states that the number of partitions with only distinct parts is equal to the number of partitions with only odd parts. The combinatorial proof follows...
The classical definition of noninterference security for a deterministic state machine with outputs requires to consider the outputs produced by machine actions after any trace, ...
Isabelle/Isar provides named cases to structure proofs. This article contains an implementation of a proof method casify, which can be used to easily extend proof tools with suppo...
This theory formalizes a commutation version of decreasing diagrams for Church-Rosser modulo. The proof follows Felgenhauer and van Oostrom (RTA 2013). The theory also provides im...