Results 141 to 150 of about 31,021 (266)
Essential g-Ascent and g-Descent of a Closed Linear Relation in Hilbert Spaces
Extracta Mathematicae, 2017 We define and discuss for a closed linear relation in a Hilbert space the notions of essential g-ascent (resp. g-descent) and g-ascent (resp. g-descent) spectrums. We improve in the Hilbert space case some results given by E.
Zied Garbouj, Haı̈kel Skhiri
doaj
New Results From the Pre‐Pottery Neolithic Site of Al Uyaynah, Tabuk, in Northwestern Saudi Arabia
Arabian Archaeology and Epigraphy, EarlyView.ABSTRACT Al Uyaynah is a low sandstone mound on an alluvial plain, long known for its extensive surface remains of stone‐built circular and rectangular structures. Following test excavations in 2012, more detailed excavation was undertaken in 2016 within one of the largest rectangular stone structures.
Khalid Alasmari +6 more
wiley +1 more source
Results on soft Hilbert spaces
, 2019 Molodtsov [6] introduced the notion of soft set which can be considered as a new mathematical approach for vagueness. Das and Samanta [8] first defined the soft vector space and soft norm. Yazar and et al. [9] defined the soft vector space by using the concept of soft point given in [4, 5] and introduced the soft normed spaces in a new point of view ...
YAZAR, M. I., ARAS, C. G., BAYRAMOV, S.
openaire +3 more sources
The oscillatory response of the electroretinogram and neuronal adaptation
Acta Ophthalmologica, EarlyView.Abstract After more than 50 years, there still remains a challenge and an interest to know more as well as extend and deepen our understanding of the small rapid wavelets, the oscillatory potentials (OPs), of the electroretinogram (ERG) and the neuronal adaptation of the retina.
Lillemor Wachtmeister, Anders Eklund
wiley +1 more source
Frameness bound for frame of subspaces
Sahand Communications in Mathematical Analysis, 2014 In this paper, we show that in each nite dimensional Hilbert space, a frame of subspaces is an ultra Bessel sequence of subspaces. We also show that every frame of subspaces in a nite dimensional Hilbert space has frameness bound.
M. R. Abdollahpour, A. Shekari
doaj
A function space model for canonical systems
, 2011 Recently, a generalization to the Pontryagin space setting of the notion of canonical (Hamiltonian) systems which involves a finite number of inner singularities has been given.
Woracek, H., Langer, Matthias
core
Acta Ophthalmologica, EarlyView.Abstract Purpose Physiological pulsations driven by cardiac, respiratory, and vasomotor activity are essential for solute transport within perivascular and perineural cerebrospinal fluid (CSF) pathways that support brain and eye clearance systems. Previous studies have shown that parasympathetic blockade significantly reduces ocular pulsation power and
Ebrahimi Seyed‐Mohsen +9 more
wiley +1 more source
, 2008 We discuss novel clusteringmethods that are based on mappingdata points to a Hilbert space by means of a Gaussian kernel. The rst method, support vector clustering(SVC), searches for the smallest sphere enclosingdata images in Hilbert space.
Physica A +2 more
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British Journal of Psychology, EarlyView.Abstract Working memory updating is a crucial cognitive function for learning and academic achievement that develops significantly throughout childhood and adolescence. Despite the varieties of existing tasks to measure children's working memory updating, its overall developmental trajectory and task‐specific developmental patterns remain inadequately ...
Ye Song, Chen Cheng
wiley +1 more source
The gravitational path integral from an observer’s point of view
Journal of High Energy PhysicsOne of the fundamental problems in quantum gravity is to describe the experience of a gravitating observer in generic spacetimes. In this paper, we develop a framework for describing non-perturbative physics relative to an observer using the ...
Ahmed I. Abdalla +3 more
doaj +1 more source