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A variant of Deville-Godefroy-Zizler principle for vector optimization. (Ukrainian. English summary) Zbl 1199.49028

Summary: A new variant of Deville-Godefroy-Zizler variational principle for vector optimization and \(\sigma\)-porosity of a set of ill-posed problems theorem is proved.

MSC:

49J40 Variational inequalities
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