Results 61 to 70 of about 950,267 (287)
Parasite, 2006 This study investigates the ecology of monogenean gill parasites of Astyanax altiparanae Garutti & Britski, 2000 and Rhamdia quelen (Quoy & Gaimard, 1824) in a stretch of the São Francisco Verdadeiro River, Paraná, Brazil.
Ferrari-Hoeinghaus A.P. +4 more
doaj +1 more source
A (2n+1)-dimensional quantum group constructed from a skew-symmetric matrix
, 2011 Beginning with a skew-symmetric matrix, we define a certain Poisson--Lie group. Its Poisson bracket can be viewed as a cocycle perturbation of the linear (or "Lie-Poisson") Poisson bracket.
Baaj +31 more
core +1 more source
Retractions in Rheumatology: Trends, Causes, and Implications for Research Integrity
Arthritis Care &Research, EarlyView.Objective We aimed to describe the trends and main reasons for study retraction in rheumatology literature. Methods We reviewed the Retraction Watch database to identify retracted articles in rheumatology. We recorded the main study characteristics, authors’ countries, reasons for retraction, time from publication to retraction, and trends over time ...
Anna Maria Vettori, Michele Iudici
wiley +1 more source
Integrability of Poisson brackets
, 2002 We show that various notions of integrability for Poisson brackets are all equivalent, and we give the precise obstructions to integrating Poisson manifolds.
Loja Fernandes, Marius Crainic, Rui
core +5 more sources
Schrödinger-Poisson–Vlasov-Poisson correspondence
Physical Review D, 2018 The Schrödinger-Poisson equations describe the behavior of a superfluid Bose-Einstein condensate under self-gravity with a 3D wave function. As ℏ/m→0, m being the boson mass, the equations have been postulated to approximate the collisionless Vlasov-Poisson equations also known as the collisionless Boltzmann-Poisson equations.
Mocz, Philip +4 more
openaire +3 more sources
Arthritis Care &Research, EarlyView.Objective We aimed to construct and evaluate the first laboratory‐based frailty index (FI‐Lab) for predicting adverse outcomes in systemic lupus erythematosus (SLE) and to compare its predictive ability to that of an existing clinical FI. Methods We used data from a single‐center prospective cohort of adult patients with SLE whose baseline visit ...
Grace Burns +2 more
wiley +1 more source
Formal equivalence of Poisson structures around Poisson submanifolds [PDF]
, 2010 Let (M, {\pi} ) be a Poisson manifold. A Poisson submanifold $P \in M$ gives rise to an algebroid $AP \rightarrow P$, to which we associate certain chomology groups which control formal deformations of {\pi} around P .
Marcut, Ioan
core
Co-Poisson structures on polynomial Hopf algebras
, 2017 The Hopf dual $H^\circ$ of any Poisson Hopf algebra $H$ is proved to be a co-Poisson Hopf algebra provided $H$ is noetherian. Without noetherian assumption, it is not true in general.
Lou, Qi, Wu, QuanShui
core +1 more source
Poisson cohomology of holomorphic toric Poisson manifolds. I [PDF]
Journal of Algebra, 2019 A holomorphic toric Poisson manifold is a nonsingular toric variety equipped with a holomorphic Poisson structure, which is invariant under the torus action. In this paper, we computed the Poisson cohomology groups for all holomorphic toric Poisson structures on $CP^n$, with the stand Poisson structure on $CP^n$ as a special case.
openaire +5 more sources
Poisson Reduction and Branes in Poisson?Sigma Models [PDF]
Letters in Mathematical Physics, 2004 18 pages. Version to appear in Lett.
Calvo, Iván, Falceto, Fernando
openaire +2 more sources