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Smoothness and analyticity for solutions of first order systems of partial differential equations on nilpotent Lie groups

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Partially supported by NSF grant # CMS-842704

Partially supported by NSF grant # DMS-8319819

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Corwin, L., Helffer, B. & Rothschild, L.P. Smoothness and analyticity for solutions of first order systems of partial differential equations on nilpotent Lie groups. Invent Math 81, 205–216 (1985). https://doi.org/10.1007/BF01389051

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