Results 141 to 150 of about 7,704,065 (318)

Metric and Symmetric Spaces [PDF]

open access: yesProceedings of the American Mathematical Society, 1974
In this paper we give an alternative proof, without reference to Urysohn’s lemma, of the metrization theorem of Bing [ 2 ], Nagata [ 6 ], and Smirnov [ 8 ] via the theory of symmetric spaces as developed by H ...
openaire   +1 more source

Smaller is better: nanobodies meet NMR

open access: yesFEBS Letters, EarlyView.
Nanobodies are single‐domain antigen‐binding fragments derived from camelid heavy chain antibodies. Their small size, high stability, and exceptional specificity make nanobodies uniquely useful probes for NMR studies of protein dynamics, transient conformational states, and protein–protein interactions.
Oleg Y. Dmitriev
wiley   +1 more source

Two classes of metric spaces [PDF]

open access: yes, 2016
The class of metric spaces (X,d) known as small-determined spaces, introduced by Garrido and Jaramillo, are properly defined by means of some type of real-valued Lipschitz functions on X.
Garrido, Isabel   +5 more
core   +1 more source

Remarks on Some Recent Fixed Point Results on Quaternion-Valued Metric Spaces

open access: yesAbstract and Applied Analysis, 2014
Very recently, Ahmed et al. introduced the notion of quaternion-valued metric as a generalization of metric and proved a common fixed point theorem in the context of quaternion-valued metric space.
Ravi P. Agarwal   +3 more
doaj   +1 more source

Invisible but not inaccessible—Revealing transient oligomers formed by intrinsically disordered proteins with solution NMR and complementary methods

open access: yesFEBS Letters, EarlyView.
Transient oligomers formed by intrinsically disordered proteins may be ‘invisible’ to direct detection yet remain accessible to solution NMR through equilibrium‐exchange measurements and pressure‐jump experiments. Complementary methods report on mass, stoichiometry, selected distance distributions, morphology, and internal packing.
Martin D. Gelenter, Ad Bax
wiley   +1 more source

Some Equivalences between Cone b-Metric Spaces and b-Metric Spaces

open access: yesAbstract and Applied Analysis, 2013
We introduce a b-metric on the cone b-metric space and then prove some equivalences between them. As applications, we show that fixed point theorems on cone b-metric spaces can be obtained from fixed point theorems on b-metric spaces.
Poom Kumam   +2 more
doaj   +1 more source

Membrane composition and thermodynamic identity as boundaries of life for synthetic cell research

open access: yesFEBS Letters, EarlyView.
What makes a cell a cell? The boundary of a living cell is not just a wall. Read as a Markov blanket, the membrane separates internal from external states, generating identity and non‐equilibrium order. Can this identity be rebuilt from scratch in a synthetic cell?
Caterina Presutti, Bert Poolman
wiley   +1 more source

A characterization of hyperbolic spaces

open access: yes, 2007
We show that a geodesic metric space, and in particular the Cayley graph of a finitely generated group, is hyperbolic in the sense of Gromov if and only if intersections of any two metric balls balls is itself "almost" a metric ball.
Chatterji, Indira, Niblo, Graham A.
core  

Scalence metric spaces

open access: yesTsukuba Journal of Mathematics, 1985
Let (X,\(\rho)\) be a metric space. For every a,b\(\in X\) let \(I_{\rho}(a,b)=\{a\}\) if \(a=b\) and \(I_{\rho}(a,b)=\{c\in X;\quad \forall x\in X \rho (x,c)
openaire   +3 more sources

Differential expression of cancer‐related genes supports prediction of poor response to first‐line treatments in T‐ALL pediatric patients with high minimal residual disease

open access: yesMolecular Oncology, EarlyView.
In the present work, we have identified a transcriptional signature based on the differential expression of six genes (BCL2&MAST4, HSH2D&LAT2, METRN&PITPNM2) that would facilitate the early detection of T‐cell acute lymphoblastic leukemia (T‐ALL) patients prone to a poor treatment response and could be implemented at diagnosis, along with other risk ...
Antonio Lahera   +11 more
wiley   +1 more source

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