Zobrazeno 1 - 10
of 640
pro vyhledávání: '"MÜLLER, Detlef"'
Long-Term Variation Study of Fine-Mode Particle Size and Regional Characteristics Using AERONET Data
Autor:
Shin, Juseon, Sim, Juhyeon, Dehkhoda, Naghmeh, Joo, Sohee, Kim, Taegyeong, Kim, Gahyeong, Müller, Detlef, Tesche, Matthias, Shin, Sung-Kyun, Shin, Dongho, Noh, Youngmin
To identify the long-term trend of particle size variation, we analyzed aerosol optical depth (AOD, τ) separated as dust (τD) and coarse-(τPC) and fine-pollution particles (τPF) depending on emission sources and size. Ångström exponent values a
Externí odkaz:
https://ul.qucosa.de/id/qucosa%3A90415
https://ul.qucosa.de/api/qucosa%3A90415/attachment/ATT-0/
https://ul.qucosa.de/api/qucosa%3A90415/attachment/ATT-0/
Autor:
Martini, Alessio, Müller, Detlef
Let $\mathcal{L}$ be a homogeneous left-invariant sub-Laplacian on a $2$-step Carnot group. We devise a new geometric approach to sharp fixed-time $L^p$-bounds with loss of derivatives for the wave equation driven by $\mathcal{L}$, based on microloca
Externí odkaz:
http://arxiv.org/abs/2406.04315
In this article, we continue the study of $L^p$-boundedness of the maximal operator $\mathcal M_S$ associated to averages along isotropic dilates of a given, smooth hypersurface $S$ in 3-dimensional Euclidean space. We focus here on small surface-pat
Externí odkaz:
http://arxiv.org/abs/2209.07352
We prove Fourier restriction estimates by means of the polynomial partitioning method for compact subsets of any sufficiently smooth hyperbolic hypersurface in threedimensional euclidean space. Our approach exploits in a crucial way the underlying hy
Externí odkaz:
http://arxiv.org/abs/2010.10449
We consider a surface with negative curvature in $\Bbb R^3$ which is a cubic perturbation of the saddle. For this surface, we prove a new restriction theorem, analogous to the theorem for paraboloids proved by L. Guth in 2016. This specific perturbat
Externí odkaz:
http://arxiv.org/abs/2003.01619
We continue our research on Fourier restriction for hyperbolic surfaces, by studying local perturbations of the hyperbolic paraboloid $z=xy$ which are of the form $z=xy+h(y),$ where $h(y)$ is a smooth function which is flat at the origin. The case of
Externí odkaz:
http://arxiv.org/abs/2002.08726
Publikováno v:
In Atmospheric Environment 1 October 2023 310
In this note, we continue our research on Fourier restriction for hyperbolic surfaces, by studying local perturbations of the hyperbolic paraboloid $z=xy,$ which are of the form $z=xy+h(y),$ where $h(y)$ is a smooth function of finite type. Our resul
Externí odkaz:
http://arxiv.org/abs/1902.05442
Spectral multipliers and wave equation for sub-Laplacians: lower regularity bounds of Euclidean type
Publikováno v:
Journal of the European Mathematical Society, 25 no. 3 (2023), p. 785-843
Let $\mathscr{L}$ be a smooth second-order real differential operator in divergence form on a manifold of dimension $n$. Under a bracket-generating condition, we show that the ranges of validity of spectral multiplier estimates of Mihlin--H\"ormander
Externí odkaz:
http://arxiv.org/abs/1812.02671