Lower semicontinuity, almost lower semicontinuity, and continuous selections for set-valued mappings
@article{Deutsch1988LowerSA, title={Lower semicontinuity, almost lower semicontinuity, and continuous selections for set-valued mappings}, author={Frank Deutsch and V. Indumathi and Klaus Schnatz}, journal={Journal of Approximation Theory}, year={1988}, volume={53}, pages={266-294} }
23 Citations
Concepts of lower semicontinuity and continuous selections for convex valued multifunctions
- Mathematics
- 1992
Lower Semicontinuity Concepts, Continuous Selections, and Set Valued Metric Projections
- MathematicsJ. Approx. Theory
- 2002
A number of semicontinuity concepts and the relations between them are discussed and geometric characterization is given of those normed linear spaces X such that the metric projection onto every one-dimensional subspace has a continuous C"0(T) and L"1(@m).
Continuous Selections For Almost Lower Semicontinuous Multifunctions
- Mathematics
- 2011
In this paper, we obtain several new continuous selection theorems for almost lower semicontinuous multifunctions T on a paracompact topological space X, in the general noncompact and/or nonconvex…
Michael selection theorem under weak lower semicontinuity assumption
- Mathematics
- 1990
We give a continuous selection theorem for convex-valued multifunctions satisfying slightly weaker lower semicontinuity assumptions than those which are adopted in the famous Michael Theorem [4] and…
Strong uniqueness, Lipschitz continuity, and continuous selections for metric projections
- Mathematics
- 1991
Characterizations of continuous and Lipschitz continuous metric selections in normed linear spaces
- Mathematics, Computer Science
- 1989
Selections For Metric Projections
- Mathematics
- 1992
A review is given of conditions which characterise when the metric projection onto a proximinal subspace of a normed linear space has a selection which is continuous, (pointwise) Lipschitz…
References
SHOWING 1-10 OF 11 REFERENCES
Continuous Selections and Approximate Selection for Set-Valued Mappings and Applications to Metric Projections
- Mathematics
- 1983
Two new continuity properties for set-valued mappings are defined which are weaker than lower semicontinuity. One of these properties characterizes when approximate selections exist. A few selection…
Continuous selections in Chebyshev approximation
- Mathematics
- 1984
A survey on continuous selections for the set-valued metric projection onto finite-dimensional subspaces of C[a,b] is given. Some applications are discussed.
Characterization of the space of continuous functions over a compact Hausdorff space
- Mathematics
- 1947
1. This paper consists of two parts, in each of which is established a completely characteristic property of those Banach spaces which are, as Banach spaces, the class of all continuous, bounded,…
Zur Stetigkeit von mengenwertigen metrischen Projektionen
- 1967
Vor einigen Jahren stellte V. Klee [11] das Problem »Unter welchen Bedingungen hat eine Cebysev-Menge A in einem normierten Vektorraum X eine stetige metrische Projektion (i. e. die Abbildung, die…