Results 31 to 40 of about 19,927 (139)

On p-Adic Sector of Adelic String

, 2009
We consider construction of Lagrangians which are candidates for p-adic sector of an adelic open scalar string. Such Lagrangians have their origin in Lagrangian for a single p-adic string and contain the Riemann zeta function with the d'Alembertian in ...
B. Dragovich, B. Dragovich, B. Dragovich, B. Dragovich, B. Dragovich, B. Dragovich, B. Dragovich, B. Dragovich, B. Dragović, D. Ghoshal, G. S. Djordjević, G. S. Djordjević, I. V. Volovich, I. Ya. Aref’eva, I. Ya. Aref’eva, L. Brekke, L. Brekke, N. Barnaby, N. Moeller, P. H. Frampton, V. S. Vladimirov, V. S. Vladimirov   +21 more
core   +1 more source

Optimal Control Strategies and Continuous Dependence for Stochastic Hilfer Fractional Systems With Delay: A Volterra‐Fredholm Integro‐Differential Approach

Optimal Control Applications and Methods, EarlyView.
The graphical abstract highlights our research on Sobolev Hilfer fractional Volterra‐Fredholm integro‐differential (SHFVFI) control problems for 1<ϱ<2$$ 1<\varrho <2 $$. We begin with the Hilfer fractional derivative (HFD) of order (1,2) in Sobolev type, which leads to Volterra‐Fredholm integro‐differential equations.
Marimuthu Mohan Raja, V. Vijayakumar, Chun‐Wei Tsai, Kalyana Chakravarthy Veluvolu   +3 more
wiley   +1 more source

Physicochemical Necessary and Sufficient Conditions for Superferromagnetism in High‐Resolution Magnetic Particle Imaging

Small, EarlyView.
This study investigates how strong dipole–dipole coupling in linear chains of synthesized superparamagnetic nanoparticles induces superferromagnetism, enhancing Magnetic Particle Imaging (MPI) resolution. A positive feedback model predicts key magnetic behaviors, such as coercivity, and guides nanoparticle synthesis.
Chinmoy Saayujya, Benjamin Fellows, Yifeng Shi, Ruhani Sagar, Benjamin G. Cary, Jacob Bryan, Cherilyn Yu, Melissa Kim, Allison Hartley, Quincy Huynh, Prashant Chandrasekharan, Zhi Wei Tay, Michael F. Wendland, Steven M. Conolly   +13 more
wiley   +1 more source

Vortex Ratchet Effect in a NbC Strip With a Periodic Edge Indentation

Small Methods, EarlyView.
The image shows the nanoprinting of a superconducting nanostructure using focused ion beam induced deposition (top left), overlaid with numerically simulated patterns of current and magnetic flux quanta (bottom). An edge indentation breaks spatial symmetry, modifying the current density distribution and inducing nonreciprocal magnetic flux dynamics the
F. Porrati, A. O. Pokusinskyi, S. Barth, M. Huth, O. V. Dobrovolskiy   +4 more
wiley   +1 more source

Cointegrating Polynomial Regressions With Power Law Trends

Journal of Time Series Analysis, EarlyView.
ABSTRACT The common practice in cointegrating polynomial regressions (CPRs) often confines nonlinearities in the variable of interest to stochastic trends, thereby overlooking the possibility that they may be caused by deterministic components. As an extension, we propose univariate and multivariate CPRs that incorporate power law deterministic trends.
Yicong Lin, Hanno Reuvers
wiley   +1 more source

Algebraic Values of Certain Analytic Functions

, 2015
Building on recent work of Masser concerning algebraic values of the Riemann zeta function, we prove two general results about the scarcity of algebraic points on the graphs of certain restrictions of certain analytic functions.
Gareth Boxall, G. Jones
semanticscholar   +1 more source

Debiasing piecewise deterministic Markov process samplers using couplings

Scandinavian Journal of Statistics, EarlyView.
Abstract Monte Carlo methods—such as Markov chain Monte Carlo (MCMC) and piecewise deterministic Markov process (PDMP) samplers—provide asymptotically exact estimators of expectations under a target distribution. There is growing interest in alternatives to this asymptotic regime, in particular in constructing estimators that are exact in the limit of ...
Adrien Corenflos, Matthew Sutton, Nicolas Chopin   +2 more
wiley   +1 more source

Compactifications of strata of differentials

Bulletin of the London Mathematical Society, EarlyView.
Abstract In this informal expository note, we quickly introduce and survey compactifications of strata of holomorphic 1‐forms on Riemann surfaces, that is, spaces of translation surfaces. In the last decade, several of these have been constructed, studied, and successfully applied to problems.
Benjamin Dozier
wiley   +1 more source

Numerical study of the derivative of the Riemann zeta function at zeros [PDF]

, 2011
The derivative of the Riemann zeta function was computed numerically on several large sets of zeros at large heights. Comparisons to known and conjectured asymptotics are presented.Comment: 13 pages, 5 figures; minor typos ...
Hiary, Ghaith A., Odlyzko, Andrew M.
core   +2 more sources

Free energy expansions of a conditional GinUE and large deviations of the smallest eigenvalue of the LUE

Communications on Pure and Applied Mathematics, Volume 78, Issue 12, Page 2247-2304, December 2025.
Abstract We consider a planar Coulomb gas ensemble of size N$N$ with the inverse temperature β=2$\beta =2$ and external potential Q(z)=|z|2−2clog|z−a|$Q(z)=|z|^2-2c \log |z-a|$, where c>0$c>0$ and a∈C$a \in \mathbb {C}$. Equivalently, this model can be realised as N$N$ eigenvalues of the complex Ginibre matrix of size (c+1)N×(c+1)N$(c+1) N \times (c+1)
Sung‐Soo Byun, Seong‐Mi Seo, Meng Yang   +2 more
wiley   +1 more source