Exterior Differential Systems

@inproceedings{Bryant1990ExteriorDS,
  title={Exterior Differential Systems},
  author={R. Bryant and S. Chern and R. Gardner and H. Goldschmidt and P. Griffiths},
  year={1990}
}
Basic theorems Cartan-Khler theory linear differential systems the characteristic variety prolongation theory applications of commutative algebra and algebraic geometry to the study of exterior differential systems partial differential equations linear differential operators. 
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