Abstract
We prove the existence of an n-dimensional completely integrable Pfaff system with multidimensional time of dimension m ⩾ 2, with bounded infinitely differentiable coefficients, and with the set of lower characteristic vectors of its solutions having positive Lebesgue m-measure.
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Original Russian Text © N.A. Izobov, S.G. Krasovskii, A.S. Platonov, 2009, published in Differentsial’nye Uravneniya, 2009, Vol. 45, No. 5, pp. 635–646.
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Izobov, N.A., Krasovskii, S.G. & Platonov, A.S. On the existence of linear Pfaff systems with lower characteristic sets of positive Lebesgue m-measure. Diff Equat 45, 650–661 (2009). https://doi.org/10.1134/S0012266109050036
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DOI: https://doi.org/10.1134/S0012266109050036