Results 71 to 80 of about 6,047 (304)

BERGMANN AND HARDY SPACES AND CONJUGATE OF THEM

open access: yesAdvanced Engineering Research, 2012
It is proved that  space is strongly notmed, and  is neither strongly notmed, nor uniformly convex. A standard form of the linear functionals over  space and over metric spaces of  0 < p £ 1, is determined.
Galina Y. Ryabykh, Vladimir G. Ryabykh
doaj  

On AdS 2 holography from redux, renormalization group flows and c-functions

open access: yesJournal of High Energy Physics, 2019
Extremal black branes upon compactification in the near horizon throat region are known to give rise to AdS 2 dilaton-gravity-matter theories. Away from the throat region, the background has nontrivial profile.
Kedar S. Kolekar, K. Narayan
doaj   +1 more source

The extremal function for Petersen minors [PDF]

open access: yesJournal of Combinatorial Theory, Series B, 2018
We prove that every graph with $n$ vertices and at least $5n-8$ edges contains the Petersen graph as a minor, and this bound is best possible. Moreover we characterise all Petersen-minor-free graphs with at least $5n-11$ edges. It follows that every graph containing no Petersen minor is 9-colourable and has vertex arboricity at most 5.
Kevin Hendrey, David R. Wood
openaire   +2 more sources

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

Extremal Problems for Graphs and Hypergraphs

open access: yes, 2021
Given a fixed graph G and a positive integer n, the extremal number [Turan, 1941] denotes the maximum number of edges a graph on n vertices can have without copies of G.
Sayan Mukherjee (43870)
core   +1 more source

Network divergence analysis identifies adaptive gene modules and two orthogonal vulnerability axes in pancreatic cancer

open access: yesMolecular Oncology, EarlyView.
Tumors contain diverse cellular states whose behavior is shaped by context‐dependent gene coordination. By comparing gene–gene relationships across biological contexts, we identify adaptive transcriptional modules that reorganize into distinct vulnerability axes.
Brian Nelson   +9 more
wiley   +1 more source

Extremal functions for real convex bodies: simplices, strips, and ellipses

open access: yes, 2021
We present an explicit method to compute the (Siciak-Zaharjuta) extremal function of a real convex polytope in terms of supporting simplices and strips.
Ma`u, Sione
core   +1 more source

Weakening the nuclear envelope: Lamin B receptor in melanoma metastasis

open access: yesMolecular Oncology, EarlyView.
LBR‐driven nuclear fragility supports melanoma invasion. A: Melanocyte presents low LBR (Lamin B Receptor) levels, maintaining nuclear integrity and lamina‐chromatin tethering. B: During malignant progression, upregulation of LBR clusters at the INM (Inner Nuclear Membrane) during confined migration causes local lamina weakening and cholesterol ...
Francesca Lorenzini   +1 more
wiley   +1 more source

Chameleon sequences reveal structural effects in proteins representing micelle‐like distribution of hydrophobicity

open access: yesFEBS Open Bio, EarlyView.
Amino acids sequence of two different proteins with the same sequence (chameleon sequence—black boxes) represent in 3D structure of the proteins different secondary structures: HHHH—helical and BBB—Beta‐structural. The chains folded in water environment adopt different III‐order structures in which the chameleon fragments appear to adopt similar status
Irena Roterman   +4 more
wiley   +1 more source

Existence of an extremal function of critical Sobolev embedding with an $\alpha $-homogeneous weight

open access: yesComptes Rendus. Mathématique
In [Calc. Var. Partial Differ. Equ. 60 (2021), no. 1, article no. 16 (27 pages)], we revisited a critical Sobolev-type embedding for weighted Sobolev spaces as introduced in [J. Differ. Equations 255 (2013), no. 11, pp.
Gurka, Petr, Hauer, Daniel
doaj   +1 more source

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