Abstract
The converse statement of the Filippov-Ważewski relaxation theorem is proved. More precisely, two differential inclusions have the same closure of their solution sets if and only if the right-hand sides have the same convex hull. The idea of the proof is examining the contingent derivatives to the attainable sets.
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Joó, I., Tallos, P. The Filippov-Ważewski Relaxation Theorem Revisited. Acta Mathematica Hungarica 83, 171–177 (1999). https://doi.org/10.1023/A:1006679923121
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DOI: https://doi.org/10.1023/A:1006679923121