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...