Global Lie–Tresse theorem

@article{Kruglikov2011GlobalLT,
  title={Global Lie–Tresse theorem},
  author={Boris Kruglikov and Valentin V. Lychagin},
  journal={Selecta Mathematica},
  year={2011},
  volume={22},
  pages={1357-1411}
}
We prove a global algebraic version of the Lie–Tresse theorem which states that the algebra of differential invariants of an algebraic pseudogroup action on a differential equation is generated by a finite number of rational-polynomial differential invariants and invariant derivations. 
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