deep drawing of cylindrical shapes with high limiting drawing ratio (ldr) values is relatively difficult. annealing is a further operation, which in turn adds costs and consumes significantly time to the forming process. in the present work, cylindrical cups from brass sheet were made with only limited anneal during few steps, but having ldr of 9 that is about 2 times higher than previous works...

Dynamic mode decomposition (DMD) describes complex dynamic processes through a hierarchy of simpler coherent features. DMD is regularly used to understand the fundamental characteristics turbulence and closely related Koopman operators. However, verifying decomposition, equivalently computed spectral features operators, remains significant challenge due infinite-dimensional nature Challenges in...

We have used Isabelle/HOL to formalize and prove correct an approach to bytecode verification based on model checking that we have developed for the Java Virtual Machine. Our work builds on, and extends, the formalization of the Java Virtual Machine and data flow analysis framework of Pusch and Nipkow. By building on their framework, we can reuse their results that relate the run-time behavior ...

Using the theorem prover Isabelle/HOL we have formalized and proved correct an executable bytecode verifier in the style of Kildall’s algorithm for a significant subset of the Java Virtual Machine. First an abstract framework for proving correctness of data flow based type inference algorithms for assembly languages is formalized. It is shown that under certain conditions Kildall’s algorithm yi...