Construction of a linear Pfaff system with <Emphasis Type="Italic">m</Emphasis>-dimensional time and with given characteristic set and lower characteristic set |
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Authors: | A S Platonov S G Krasovskii |
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Institution: | 1.University of Civil Protection,Belorussian Emergency Ministry,Minsk,Belarus;2.Institute of Mathematics,National Academy of Sciences of Belarus,Minsk,Belarus |
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Abstract: | For any positive integers n ≥ 1 and m ≥ 2, we give a constructive proof of the existence of linear n-dimensional Pfaff systems with m-dimensional time and with infinitely differentiable coefficient matrices such that the characteristic and lower characteristic sets of these systems are given sets that are the graphs of a concave continuous function and a convex continuous function, respectively, defined and monotone decreasing on simply connected closed bounded convex domains of the space ?m?1. |
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