Zobrazeno 1 - 10
of 1 242
pro vyhledávání: '"P. Blaga"'
Autor:
Blaga, Adara M.
We put into light the Killing vector fields on $\mathbb R^2$ endowed with a family of diagonal Riemannian metrics. According to certain restrictions on the Lam\'{e} coefficients, we concretely describe the symmetries of the metric.
Comment: 11 p
Comment: 11 p
Externí odkaz:
http://arxiv.org/abs/2410.11969
A quasi-consensus has steadily formed in the scientific literature on the fact that the prevention measures implemented by most countries to curb the 2020 COVID-19 pandemic have led to significant reductions in pollution levels around the world, espe
Externí odkaz:
http://arxiv.org/abs/2408.11757
Autor:
Blaga, Adara M.
We study some properties of a $3$-dimensional manifold with a diagonal Riemannian metric as an almost $\eta$-Ricci soliton from the following points of view: under certain assumptions, we determine the potential vector field if $\eta$ is given; we ge
Externí odkaz:
http://arxiv.org/abs/2406.12533
Autor:
Blaga, Robert, Mares, Oana, Paulescu, Eugenia, Boata, Remus, Sabadus, Andreea, Hategan, Sergiu-Mihai, Calinoiu, Delia, Stefu, Nicoleta, Paulescu, Marius
Aerosols' impact on the performance of a clear-sky solar irradiance model is often evaluated from the perspective of the overall accuracy of estimates. This study assesses the aerosol role in clear-sky solar irradiance modelling from a totally differ
Externí odkaz:
http://arxiv.org/abs/2406.08000
Humans use UAVs to monitor changes in forest environments since they are lightweight and provide a large variety of surveillance data. However, their information does not present enough details for understanding the scene which is needed to assess th
Externí odkaz:
http://arxiv.org/abs/2403.06621
Autor:
Blaga, Robert
Low-cost particulate matter sensors (LCS) are an important source of air quality data, improving the spatial and temporal resolution of data gathered by sparsely placed official monitoring stations. Their readings, however, are subject to bias due to
Externí odkaz:
http://arxiv.org/abs/2402.12942
Autor:
Blaga, Adara M., Latcu, Dan Radu
We study some properties of pointwise $k$-slant submanifolds of almost Hermitian manifolds with a special view towards K\"{a}hler manifolds. In particular, we characterize the integrability of the component distributions, treating also the totally ge
Externí odkaz:
http://arxiv.org/abs/2311.12703
Autor:
Blaga, Adara M.
We provide conditions for a compact gradient hyperbolic Ricci and a compact gradient hyperbolic Yamabe soliton to be trivial, hence, the manifold to be an Einstein manifold in the first case, and a manifold of constant scalar curvature, in the second
Externí odkaz:
http://arxiv.org/abs/2311.09337
Autor:
Blaga, Adara M.
We characterize the $2$-Killing vector fields on a multiply twisted product manifold, with a special view towards generalized spacetimes. More precisely, we determine the nonlinear differential equations that completely describe them and the twisted
Externí odkaz:
http://arxiv.org/abs/2310.19423
Autor:
Blaga, Adara M., Özgür, Cihan
We define the hyperbolic Yamabe flow and we obtain some properties of its stationary solutions, namely, of hyperbolic Yamabe solitons. We also consider immersed submanifolds as hyperbolic Yamabe solitons and we prove that, under certain assumptions,
Externí odkaz:
http://arxiv.org/abs/2310.15814