A distributed computing scenario is considered, where the computational power of a set worker nodes used to perform certain computation task over dataset that dispersed among workers. Lagrange coded (LCC), proposed by Yu et al., leverages well-known polynomial evaluation in such an efficient parallel fashion while keeping privacy data amidst possible collusion This solution relies on quantizing...

We re-elaborate on the recent basic result that the action of any multilayer is equivalent to a proper Lorentz transformation. As a consequence, we propose simple optical measurements that can serve as an analogue computer for simulating special relativity. Special attention is paid to the question of the Wigner rotation, showing that it can be easily observed in multilayers.