Before revision: For the simplest model with only memristive devices with voltage generators in series, there is an exact and in closed form equation ( Caravelli-Traversa-Di Ventra equation , CTD ) which describes the evolution of the internal memory of the network for each device.
After revision: For the simplest model with only memristive devices with voltage generators in series, there is an exact and in closed form equation ( Caravelli–Traversa–Di Ventra equation equation, CTDV ) which describes the evolution of the internal memory of the network for each device.