# Nonlinear Conformal Electromagnetism and Gravitation

@article{Pommaret2020NonlinearCE, title={Nonlinear Conformal Electromagnetism and Gravitation}, author={J. F. Pommaret}, journal={arXiv: General Physics}, year={2020} }

In 1909 the brothers E. and F. Cosserat discovered a new nonlinear group theoretical approach to elasticity (EL), with the only experimental need to measure the EL constants. In a modern language, their idea has been to use the nonlinear Spencer sequence instead of the nonlinear Janet sequence for the Lie groupoid defining the group of rigid motions of space. Following H. Weyl, our purpose is to compute for the first time the nonlinear Spencer sequence for the Lie groupoid defining the…

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