Results 61 to 70 of about 249,079 (313)

Representations of the fundamental group and vector bundles

open access: yesMathematische Annalen, 1995
The main result of the paper states that a vector bundle \(F\) on a projective nodal curve \(Y\) is associated to a representation \(\zeta\) of the fundamental group \(\pi_1 (Y)\) if and only if its pull back to the normalization \(X\) of \(Y\) is a direct sum of the indecomposable vector bundles of degree 0. If the restriction of \(\zeta\) to \(\pi_1 (
openaire   +2 more sources

Interaction vesicles as emerging mediators of host‐pathogen molecular crosstalk and their implications for infection dynamics

open access: yesFEBS Letters, EarlyView.
Interaction extracellular vesicles (iEVs) are hybrid vesicles formed through host‐pathogen communication. They facilitate immune evasion, transfer pathogens' molecules, increase host cell uptake, and enhance virulence. This Perspective article illustrates the multifunctional roles of iEVs and highlights their emerging relevance in infection dynamics ...
Bruna Sabatke   +2 more
wiley   +1 more source

The asymptotic representation of the fundamental matrix of a discrete system

open access: yesLe Matematiche, 1999
In this paper by using the notion of discrete dichotomies, an asymptotic representation of Φ, the fundamental matrix of the linear difference equation y(n + 1) = (A(n) + B(n))y(n) is given.
Raúl Naulin
doaj  

A Full-Body Relative Orbital Motion of Spacecraft Using Dual Tensor Algebra and Dual Quaternions

open access: yesMathematics, 2023
This paper proposes a new non-linear differential equation for the six degrees of freedom (6-DOF) relative rigid bodies motion. A representation theorem is provided for the 6-DOF differential equation of motion in the arbitrary non-inertial reference ...
Daniel Condurache
doaj   +1 more source

Decoding the dual role of autophagy in cancer through transcriptional and epigenetic regulation

open access: yesFEBS Letters, EarlyView.
Transcriptional and epigenetic regulation controls autophagy, which exerts context‐dependent effects on cancer: Autophagy suppresses tumorigenesis by maintaining cellular homeostasis or promotes tumor progression by supporting survival under stress. In this “In a Nutshell” article, we explore the intricate mechanisms of the dual function of autophagy ...
Young Suk Yu, Ik Soo Kim, Sung Hee Baek
wiley   +1 more source

Schmitt e o problema da democracia: nostalgia da transcendência ou a representação como questão para a democracia

open access: yesKriterion, 2008
O artigo analisa a questão da democracia em Carl Schmitt. Para tanto, retoma seu conceito de forma política que inclui identidade e representação. Após apresentar uma distinção fundamental para a noção de democracia, deriva algumas conseqüências do ...
Cássio Corrêa Benjamin
doaj   +1 more source

Searching for continuous phase transitions in 5D SU(2) lattice gauge theory

open access: yesJournal of High Energy Physics, 2021
We study the phase diagram of 5-dimensional SU(2) Yang-Mills theory on the lattice. We consider two extensions of the fundamental plaquette Wilson action in the search for the continuous phase transition suggested by the 4 + ϵ expansion.
Adrien Florio   +3 more
doaj   +1 more source

Autophagy in cancer and protein conformational disorders

open access: yesFEBS Letters, EarlyView.
Autophagy plays a crucial role in numerous biological processes, including protein and organelle quality control, development, immunity, and metabolism. Hence, dysregulation or mutations in autophagy‐related genes have been implicated in a wide range of human diseases.
Sergio Attanasio
wiley   +1 more source

Meson spectrum in SU(N) gauge theories with quarks in higher representations: A check of Casimir scaling hypothesis

open access: yesResults in Physics, 2020
Gauge theories with gauge group SU(N) and quarks belonging to arbitrary representations of SU(N) form a rich landscape of QCD-like theories, whose study can shed new light on the properties of confinement.
Fabien Buisseret, Claude Semay
doaj  

STRING APPROACH TO QCD WITH QUARKS IN FUNDAMENTAL REPRESENTATIONS [PDF]

open access: yesInternational Journal of Modern Physics A, 2005
Straightforward use of AdS/CFT correspondence can give QCD with quarks in adjoint representations. Using an asymmetric orbifold approach we obtain nonsupersymmetric QCD with four quark flavors in fundamental representations of color.
openaire   +4 more sources

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