Ivar I. Ekeland (born 2 July 1944, Paris) is a French mathematician of Norwegian descent. Ekeland has written influential monographs and textbooks on… (More)

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2015

2015

- ROBERT L. BRYANT, Richard A. Bryant
- 2015

The classical Pfaff-Darboux Theorem, which provides local ‘normal forms’ for 1-forms on manifolds, has applications in the theory… (More)

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2015

2015

- 2015

What happens to the conclusion of the Ekeland variational principle (briefly, EVP) if a considered function f : X → R ∪ {+∞} is… (More)

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2011

2011

- Phan Quoc Khanh, Dinh Ngoc Quy
- J. Global Optimization
- 2011

We propose a very weak type of generalized distance called weak τ -function and use it to weaken the assumptions about lower… (More)

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2011

2011

We establish several set-valued function versions of Ekeland’s variational principle and hence provide some sufficient conditions… (More)

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2010

2010

We introduce the notion of λ-spaces which is much weaker than cone metric spaces defined by Huang and X. Zhang 2007 . We… (More)

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2010

2010

- Kazimierz Włodarczyk, Robert Plebaniak, Tomonari Suzuki
- 2010

Our aim is twofold: first, we want to introduce a partial quasiordering in cone uniform spaces with generalized pseudodistances… (More)

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2010

2010

- Rui Gao, Yungang Liu, Jixue Zhang
- 2010 8th World Congress on Intelligent Control…
- 2010

The global optimal control problem with free system terminal states is proposed for the hybrid impulsive and switching systems… (More)

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2001

2001

We shall show that a recent version of Ekeland's principle in F-type topological spaces due to Fang from 1996 is implied by the… (More)

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2000

2000

We finally understand. Things are the way they are because they can't be otherwise. Ivar Ekeland

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Highly Cited

1992