Results 41 to 50 of about 219,381 (279)

Approximation and extension of Hermitian metrics on holomorphic vector bundles over Stein manifolds

open access: yesComptes Rendus. Mathématique
We show that a singular Hermitian metric on a holomorphic vector bundle over a Stein manifold which is negative in the sense of Griffiths (resp. Nakano) can be approximated by a sequence of smooth Hermitian metrics with the same curvature negativity.
Deng, Fusheng   +3 more
doaj   +1 more source

Integrable almost s-tangent structures [PDF]

open access: yesRendiconti di Matematica e delle Sue Applicazioni, 1994
We prove that an integrable almost s–tangent manifold which defines a fibration over a differentiable manifold M is a vector bundle over M isomorphic to the stable tangent bundle of M.
M. DE LEON, J. A. OUBINA, M. SALGADO
doaj  

A note on Demailly’s approach towards a conjecture of Griffiths

open access: yesComptes Rendus. Mathématique, 2021
We prove that a “cushioned” Hermitian–Einstein-type equation proposed by Demailly in an approach towards a conjecture of Griffiths on the existence of a Griffiths positively curved metric on a Hartshorne ample vector bundle, has an essentially unique ...
Pingali, Vamsi Pritham
doaj   +1 more source

SUSY vertex algebras and supercurves

open access: yes, 2006
This article is a continuation of math.QA/0603633 Given a strongly conformal SUSY vertex algebra V and a supercurve X we construct a vector bundle V_X on X, the fiber of which, is isomorphic to V. Moreover, the state-field correspondence of V canonically
A. Beilinson   +25 more
core   +1 more source

Rad27/FEN1 prevents accumulation of Okazaki fragments and ribosomal DNA copy number changes

open access: yesFEBS Letters, EarlyView.
The budding yeast Rad27 is a structure‐specific endonuclease. Here, the authors reveal that Rad27 is crucial for maintaining the stability of the ribosomal RNA gene (rDNA) region. Rad27 deficiency leads to the accumulation of Okazaki fragments and changes in rDNA copy number.
Tsugumi Yamaji   +3 more
wiley   +1 more source

ON THE LIFTS OF SEMI-RIEMANNIAN METRICS [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 1994
In this paper, we extend Sasaki metric for tangent bundle of a Riemannian manifold and Sasaki-Mok metric for the frame bundle of a Riemannian manifold [I] to the case of a semi-Riemannian vector bundle over a semi- Riemannian manifold. In fact, if E is a
doaj  

The anti‐CRISPR protein AcrIE8.1 inhibits the type I‐E CRISPR‐Cas system by directly binding to the Cascade subunit Cas11

open access: yesFEBS Letters, EarlyView.
In this study, we present the structure of AcrIE8.1, a previously uncharacterized anti‐CRISPR protein that inhibits the type I‐E CRISPR‐Cas system. Through a combination of structural and biochemical analyses, we demonstrate that AcrIE8.1 directly binds to the Cas11 subunit of the Cascade complex to inhibit the CRISPR‐Cas system.
Young Woo Kang, Hyun Ho Park
wiley   +1 more source

On the scalar components of the canonical form on higher order frame bundles

open access: yesДифференциальная геометрия многообразий фигур
A detailed obtaining of the expressions for the scalar components of the canonical form on higher order frame bundles over a smooth manifold has been done.
A. V. Kuleshov
doaj   +1 more source

Weighted E-Spaces and Epistemic Information Operators

open access: yesInformation, 2014
Information is usually related to knowledge. Here, we present a broader picture in which information is associated with epistemic structures, which form cognitive infological systems as basic recipients and creators of cognitive information.
Mark Burgin
doaj   +1 more source

Can You Hear the Shape of a Market? Geometric Arbitrage and Spectral Theory

open access: yesAxioms, 2021
Utilizing gauge symmetries, the Geometric Arbitrage Theory reformulates any asset model, allowing for arbitrage by means of a stochastic principal fibre bundle with a connection whose curvature measures the “instantaneous arbitrage capability”.
Simone Farinelli, Hideyuki Takada
doaj   +1 more source

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