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- Corneliu Ursescu
- Int. J. Math. Mathematical Sciences
- 2005

Here, S stands for the closure of the set S. Various openness and almost openness notions are build on the inclusions (1.1) and (1.2). Every openness property implies the corresponding almost openness property, for S⊆ S. It is expected for the converse implication to be true in case that the multifunction F has a closed graph. In this regard, we recall the… (More)

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