Already registered? Click here to login now. Linear electromagnetic devices — such as linear motors, generators, actuators, and magnetic gears — play a vital role in precision motion control, energy ...

Grade school math students are likely familiar with teachers admonishing them not to just guess the answer to a problem. But a new proof establishes that, in fact, the right kind of guessing is ...

This is a preview. Log in through your library . Abstract A strong maximum principle for second order parabolic equations has been introduced by L. Nirenberg. The present paper contains both strong ...