Results 91 to 100 of about 15,674 (187)

Rapid Earthquake Magnitude Estimation for Local Early Warning Systems Using Seismogeodesy

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.
Abstract Rapid and accurate estimation of earthquake moment magnitude is crucial for early warning systems, for alerting coastal populations vulnerable to tsunamigenic hazards. Most seismic‐based estimation approaches introduce time delays that limit applicability near the source, while geodetic approaches have been limited to empirical scaling ...
Jonatan Glehman, Yehuda Bock, Barry Hirshorn, Allen Nance, Jonathan R. Weiss, Stuart Weinstein, Dorian Golriz   +6 more
wiley   +1 more source

Calibrated Granular‐Flow PIV From DEM Simulations: Flow‐Substrate Dynamics in Flows With Fixed and Erodible Substrates, Modeling, and Field Implications

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 4, April 2026.
Abstract Granular flows are central to geophysical and industrial processes, yet their internal properties remain difficult to quantify. Understanding how energy and momentum are exchanged at the flow–substrate boundary is key to predicting their erosion and mobility.
Symeon Makris, Eric C. P. Breard, Eliza S. Calder   +2 more
wiley   +1 more source

Capacity bounds for wireless ergodic fading Broadcast Channels with partial CSIT [PDF]

2013 IEEE International Symposium on Information Theory, 2013
The two-user wireless ergodic fading Broadcast Channel (BC) with partial Channel State Information at the Transmitter (CSIT) is considered. The CSIT is given by an arbitrary deterministic function of the channel state. This characteristic yields a full control over how much state information is available, from perfect to no information.
openaire   +2 more sources

Stationary and Nonstationary Influences of Teleconnections on Terrestrial Water Storage Anomalies in Vietnam

JAWRA Journal of the American Water Resources Association, Volume 62, Issue 2, April 2026.
ABSTRACT Previous studies of teleconnection (TC) impacts on Terrestrial Water Storage Anomalies (TWSA) rarely focus on Vietnam or on the nonstationary nature of TC–TWSA relationships. This study addresses these gaps by examining both stationary and nonstationary TC influences on TWSA using correlation analysis (Pearson and cross‐spectral methods) and ...
Hoa Thi Pham, Joseph Awange, Sten Claessens   +2 more
wiley   +1 more source

Hausdorff dimension of double‐base expansions and binary shifts with a hole

Bulletin of the London Mathematical Society, Volume 58, Issue 4, April 2026.
Abstract For two real bases q0,q1>1$q_0, q_1 > 1$, a binary sequence i1i2⋯∈{0,1}∞$i_1 i_2 \cdots \in \lbrace 0,1\rbrace ^\infty$ is the (q0,q1)$(q_0,q_1)$‐expansion of the number πq0,q1(i1i2⋯)=∑k=1∞ikqi1⋯qik.$$\begin{equation*} \pi _{q_0,q_1}(i_1 i_2 \cdots) = \sum _{k=1}^\infty \frac{i_k}{q_{i_1} \cdots q_{i_k}}.
Jian Lu, Wolfgang Steiner, Yuru Zou
wiley   +1 more source

Non‐amenability of mapping class groups of infinite‐type surfaces and graphs

Bulletin of the London Mathematical Society, Volume 58, Issue 4, April 2026.
Abstract This paper completely determines the non‐amenability of the mapping class groups of infinite‐type surfaces, the mapping class groups of locally finite infinite graphs of higher ranks, gives an example of non‐amenable stabiliser of a point at infinity of a coarsely bounded generated hyperbolic Polish group, and exhibits a class of mapping class
Yusen Long
wiley   +1 more source

On the Fourier transform of random Bernoulli convolutions

Journal of the London Mathematical Society, Volume 113, Issue 4, April 2026.
Abstract We investigate random Bernoulli convolutions, namely, probability measures given by the infinite convolution where ω=(λk)$\omega =(\lambda _k)$ is a sequence of i.i.d. random variables each following the uniform distribution on some fixed interval. We study the regularity of these measures and prove that when expElogλ1>2π$\exp \mathbb {E}\left(
Simon Baker, Henna Koivusalo, Sascha Troscheit, Xintian Zhang   +3 more
wiley   +1 more source

Ergodic theorems for certain power bounded operators

Collectanea Mathematica, 1987
We consider invertible power bounded operators T on an Orlicz space such that T or \(T^{-1}\) is positive or T separates supports. For a wide class of Orlicz spaces we prove individual ergodic theorems and dominated ergodic theorems, and study the ergodic Hilbert transforms.
openaire   +2 more sources

Graphical small cancellation and hyperfiniteness of boundary actions

Journal of the London Mathematical Society, Volume 113, Issue 4, April 2026.
Abstract We study actions of (infinitely presented) graphical small cancellation groups on the Gromov boundaries of their coned‐off Cayley graphs. We show that a class of graphical small cancellation groups, including (infinitely presented) classical small cancellation groups, admit hyperfinite boundary actions, more precisely, the orbit equivalence ...
Chris Karpinski, Damian Osajda, Koichi Oyakawa   +2 more
wiley   +1 more source

Universal gap growth for Lyapunov exponents of perturbed matrix products

Journal of the London Mathematical Society, Volume 113, Issue 4, April 2026.
Abstract We study the quantitative simplicity of the Lyapunov spectrum of d$d$‐dimensional bounded matrix cocycles subjected to additive random perturbations. In dimensions 2 and 3, we establish explicit lower bounds on the gaps between consecutive Lyapunov exponents of the perturbed cocycle, depending only on the scale of the perturbation.
Jason Atnip, Gary Froyland, Cecilia González‐Tokman, Anthony Quas   +3 more
wiley   +1 more source