Results 71 to 80 of about 1,984 (170)

One‐level densities in families of Grössencharakters associated to CM elliptic curves

Mathematika, Volume 72, Issue 1, January 2026.
Abstract We study the low‐lying zeros of a family of L$L$‐functions attached to the complex multiplication elliptic curve Ed:y2=x3−dx$E_d \;:\; y^2 = x^3 - dx$, for each odd and square‐free integer d$d$. Specifically, upon writing the L$L$‐function of Ed$E_d$ as L(s−12,ξd)$L(s-\frac{1}{2}, \xi _d)$ for the appropriate Grössencharakter ξd$\xi _d$ of ...
Chantal David, Lucile Devin, Ezra Waxman
wiley   +1 more source

A Hole-free Shifted Coprime Array for DOA Estimation

Journal of Telecommunications and Information Technology
Coprime arrays have recently become a popular trend in estimating the direction of arrival in array signal processing, as they increase the degree of freedom (DOF).
Fatimah Abdulnabi Salman, Bayan Mahdi Sabbar   +1 more
doaj   +1 more source

Farey sequence in the appearance of subharmonic Shapiro steps

, 2015
Largest Lyapunov exponent has been examined in the dynamical-mode locking phenomena of the ac+dc driven dissipative Frenkel-Kontorova model with deformable substrate potential.
Mali, Petar, Odavic, Jovan, Tekic, Jasmina   +2 more
core   +1 more source

Mixability of Finite Groups

Random Structures &Algorithms, Volume 67, Issue 4, December 2025.
ABSTRACT A finite group G$$ G $$ is mixable if a product of random elements, each chosen independently from two options, can distribute uniformly on G$$ G $$. We present conditions and obstructions to mixability. We show that 2‐groups, the symmetric groups, the simple alternating groups, several matrix and sporadic simple groups, and most finite ...
Gideon Amir, Guy Blachar, Subhajit Ghosh, Uzi Vishne   +3 more
wiley   +1 more source

Photon propagation in a discrete fiber network: An interplay of coherence and losses

, 2011
We study light propagation in a photonic system that shows stepwise evolution in a discretized environment. It resembles a discrete-time version of photonic waveguide arrays or quantum walks.
Bersch, Christoph, Hinrichs, Benjamin, Onishchukov, Georgy, Peschel, Ulf, Regensburger, Alois, Schreiber, Andreas, Silberhorn, Christine   +6 more
core   +1 more source

Virtual array interpolation for coprime arrays: a signal reconstruction perspective

Electronics Letters, 2020
Coprime arrays can highly increase degree‐of‐freedom by operating the second‐order virtual signal. However, the corresponding virtual array is discontiguous, and thus most existing direction‐of‐arrival estimation approaches fail to utilise all received information.
Zhen Chen, Chongyi Fan, Xiaotao Huang
openaire   +1 more source

Iitaka fibrations and integral points: A family of arbitrarily polarized spherical threefolds

Journal of the London Mathematical Society, Volume 112, Issue 6, December 2025.
Abstract Studying Manin's program for a family of spherical log Fano threefolds, we determine the asymptotic number of integral points whose height associated with an arbitrary ample line bundle is bounded. This confirms a recent conjecture by Santens and sheds new light on the logarithmic analog of Iitaka fibrations, which have not yet been adequately 
Ulrich Derenthal, Florian Wilsch
wiley   +1 more source

Motion of discrete interfaces in periodic media

, 2013
We study the motion of discrete interfaces driven by ferromagnetic interactions in a two-dimensional periodic environment by coupling the minimizing movements approach by Almgren, Taylor and Wang and a discrete-to-continuous analysis.
Braides, A., Scilla, G.
core   +1 more source

Depinning of kinks in a Josephson-junction ratchet array

, 1999
We have measured the depinning of trapped kinks in a ratchet potential using a fabricated circular array of Josephson junctions. Our ratchet system consists of a parallel array of junctions with alternating cell inductances and junctions areas.
A.V. Ustinov, C.S. Lee, D.J. Resnick, E. Lennholm, E. Trías, F. Domínguez-Adame, F. Falo, F. Falo, F. Jülicher, I. Derényi, J. J. Mazo, J. Rousselet, L. Gammaitoni, L.M. Floría, M. Büttiker, M.O. Magnasco, P. Hänggi, P. Jung, P. Jung, R. Bartussek, R.D. Astumian, S. Kim, S. Watanabe, T. P. Orlando, V. Ambegaokar, Y. Braiman   +25 more
core   +1 more source

Near-Field Localization With Coprime Array

Proceedings of the 30th Annual International Conference on Mobile Computing and Networking
Large-aperture coprime arrays (CAs) are expected to achieve higher sensing resolution than conventional dense arrays (DAs), yet with lower hardware and energy cost. However, existing CA far-field localization methods cannot be directly applied to near-field scenarios due to channel model mismatch.
Hongqiang Cheng, Changsheng You, Cong Zhou   +2 more
openaire   +2 more sources