Results 31 to 40 of about 727,489 (238)

On projections of metric spaces

open access: yesJ. Comput. Geom., 2011
Journal of Computational Geometry, Vol. 5 No. 1 (2014)
openaire   +4 more sources

Metric Projection onto a Lattice in L1

open access: yes, 1994
In this note it is shown that the L1 metric projection onto a lattice is Lipschitz continuous, and that it has a Lipschitz continuous ...
Sahab, S., Huotari, R.
core   +1 more source

METRIC PROJECTIONS IN LINEAR METRIC SPACES

open access: yesDemonstratio Mathematica, 1990
Summary: Various properties of the metric projection are known in normed linear spaces. \textit{G. Pantelidis} [Math. Ann. 184, 30--48 (1969; Zbl 0175.42001)] discussed some of these properties in linear metric spaces. In this paper we also discuss some necessary and sufficient conditions for the metric projections to be continuous and Lipschitzian in ...
openaire   +1 more source

Metric projections and the alternating projection method in banach spaces

open access: yes, 2020
This thesis is concerned with properties of the metric projection and its iterates in Banach spaces. It extends a result by Stiles concerning the convergence behaviour of the alternating projection method from finite-dimensional spaces to some infinite ...
Luggin, Franz
core   +3 more sources

On the distance between two Chebyshev sets in Banach spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1997
The paper answers a question concerning the distance between two Chebyshev sets in some Banach spaces.
Wagdy G. El-Sayed
doaj   +1 more source

On the Norm of the Metric Projections

open access: yesJournal of Approximation Theory, 1999
Let \(X\) be a Banach space and \(M\) a subspace of \(X\). Define \[ P_M(x)= \{y\in M:\| x-y\|= d(x,M)\}. \] The set-valued mapping \(P_M:X\to 2^M\), thus defined is called the metric projection onto \(M\). The space \(M\) is called proximinal if \(P_M(x)\neq \emptyset\) for every \(x\in X\). The norm of \(P_M\) is defined by \[ \| P_M\|= \sup\{\| y\|:
openaire   +1 more source

Differentiability of the metric projection in finite-dimensional Euclidean space

open access: yes, 1973
The metric projection on a closed subset of a finite-dimensional Euclidean space is almost everywhere differentiable.
Edgar Asplund
core   +1 more source

Social Functioning Within the First Years After Pediatric Brain Tumor Diagnosis and the Relationship With Family Psychosocial Risk

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Survivors of pediatric brain tumors (PBTs) can experience long‐term social difficulties, impacting quality of life. Beyond medical and environmental factors, family psychosocial risk may play a role in social outcomes by shaping the caregiving environment and may provide intervention options.
Renske H. Houben   +4 more
wiley   +1 more source

Approximate Common Solutions for a Family of Inverse Strongly Monotone Mappings

open access: yesAxioms
In 2003 W. Takahashi and M. Toyoda showed the weak convergence of an iteration process of finding the solution of a variational inequality problem for an inverse strongly monotone mapping.
Alexander J. Zaslavski
doaj   +1 more source

Retrospective Analysis of Donor Lymphocyte Infusions in Pediatric Patients With Mixed Chimerism After Hematopoietic Stem Cell Transplantation

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Allogeneic hematopoietic stem cell transplantation (alloHSCT) is an essential therapy for several malignant and nonmalignant diseases, but relapse and graft loss remain the principal threats to its success. Routine monitoring of chimerism and minimal residual disease (MRD) enables early detection of imminent recurrence and guides ...
Carmen Junk   +10 more
wiley   +1 more source

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