Results 11 to 20 of about 819,201 (281)

Convergence of iterates of pre-mean-type mappings

open access: yesESAIM: Proceedings and Surveys, 2014
Pre-mean in an interval I, being defined as a function M:I2 → I such that M(x,x) = x for x ∈ I,is an essential generalization of the mean.
Matkowski Janusz
doaj   +1 more source

Fixed point properties for semigroups of nonexpansive mappings on convex sets in dual Banach spaces

open access: yesAnnales Universitatis Paedagogicae Cracoviensis: Studia Mathematica, 2018
It has been a long-standing problem posed by the first author in a conference in Marseille in 1990 to characterize semitopological semigroups which have common fixed point property when acting on a nonempty weak* compact convex subset of a dual Banach ...
Anthony To-Ming Lau, Yong Zhang
doaj   +1 more source

Mean-of-Order-p Location-Invariant Extreme Value Index Estimation

open access: yesRevstat Statistical Journal, 2016
A simple generalisation of the classical Hill estimator of a positive extreme value index (EVI) has been recently introduced in the literature. Indeed, the Hill estimator can be regarded as the logarithm of the mean of order p = 0 of a certain set of ...
M. Ivette Gomes   +2 more
doaj   +1 more source

Invariant means on Boolean inverse monoids [PDF]

open access: yes, 2015
The classical theory of invariant means, which plays an important role in the theory of paradoxical decompositions, is based upon what are usually termed `pseudogroups'. Such pseudogroups are in fact concrete examples of the Boolean inverse monoids which
Kudryavtseva, Ganna   +3 more
core   +2 more sources

Chen optimal inequalities of CR-warped products of generalized Sasakian space form

open access: yesJournal of Taibah University for Science, 2020
Our main objective of this paper is to derive the relationship between the main extrinsic invariant, and the contact CR δ-invariant (new intrinsic invariant) on a generic submanifold in trans-Sasakian generalized Sasakian space forms.
Aliya Naaz Siddiqui   +2 more
doaj   +1 more source

Invariant foreground occupation ratio for scale adaptive mean shift tracking

open access: yesIET Computer Vision, 2015
The mean shift algorithm has been introduced successfully into the field of computer vision to be an efficient approach for visual tracking but the tracker has been awkward in handling the scale change of the object.
Yi Song   +4 more
doaj   +1 more source

Differential Parametric Formalism for the Evolution of Gaussian States: Nonunitary Evolution and Invariant States

open access: yesEntropy, 2020
In the differential approach elaborated, we study the evolution of the parameters of Gaussian, mixed, continuous variable density matrices, whose dynamics are given by Hermitian Hamiltonians expressed as quadratic forms of the position and momentum ...
Julio A. López-Saldívar   +2 more
doaj   +1 more source

A new perspective on the spatio-temporal variability of soil moisture: temporal dynamics versus time-invariant contributions [PDF]

open access: yesHydrology and Earth System Sciences, 2012
Knowledge about the spatio-temporal variability of soil moisture is essential to understand and predict processes in climate science and hydrology. A significant body of literature exists on the characterization of the spatial variability and the rank ...
H. Mittelbach, S. I. Seneviratne
doaj   +1 more source

Invariant information and quantum state estimation [PDF]

open access: yes, 2001
The invariant information introduced by Brukner and Zeilinger, Phys. Rev. Lett. 83, 3354 (1999), is reconsidered from the point of view of quantum state estimation. We show that it is directly related to the mean error of the standard reconstruction from
A. Zeilinger   +18 more
core   +2 more sources

Totally umbilical proper slant submanifolds of para-Kenmotsu manifold

open access: yesCubo, 2019
In this paper, we study slant submanifolds of a para-Kenmotsu manifold. We prove that totally umbilical slant submanifold of a para-Kenmotsu manifold is either invariant or anti-invariant or dimension of submanifold is 1 or the mean curvature vector H of
M.S. Siddesha, C.S. Bagewadi, D. Nirmala
doaj   +1 more source

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