Results 41 to 50 of about 16,180 (243)

Variational inequality arising from variable annuity with mean reversion environment

open access: yesJournal of Inequalities and Applications, 2023
In this paper, we study a variational inequality arising from variable annuity (VA) to find the optimal surrender strategy for a VA investor when the underlying asset follows a mean reverting process.
Junkee Jeon, Geonwoo Kim
doaj   +1 more source

Space‐Time Smoothness and Parsimony in Covariance Functions

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT This paper challenges the trade off between computational efficiency and statistical accuracy within the framework of Gaussian space‐time processes. Under such a framework, the space‐time dependence is completely specified through the space‐time covariance function.
Tarik Faouzi   +2 more
wiley   +1 more source

Mellin Transform of Dirichlet L-Functions with Primitive Character

open access: yesMathematical Modelling and Analysis, 2014
In the paper, meromorphic continuation for the modified Mellin transform of Dirichlet L-functions with primitive character is obtained.
Aidas Balčiūnas, Darius Šiaučiūnas
doaj   +1 more source

Estimates and properties of certain q-Mellin transform on generalized q-calculus theory

open access: yesAdvances in Difference Equations, 2021
This paper deals with the generalized q-theory of the q-Mellin transform and its certain properties in a set of q-generalized functions. Some related q-equivalence relations, q-quotients of sequences, q-convergence definitions, and q-delta sequences are ...
Shrideh Al-Omari
doaj   +1 more source

Stress–singularity analysis in space junctions of thin plates [PDF]

open access: yes, 2000
The stress singularity in space junctions of thin linearly elastic isotropic plate elements with zero bending rigidities is investigated. The problem for an intersection of infinite wedge-shaped elements is considered first and the solution for each ...
Mikhailov, SE, Namestnikova, IV
core   +1 more source

Bridging the gap in deep seafloor management: Ultra fine‐scale ecological habitat characterization of large seascapes

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
To achieve the UN's goal of protecting 30% of oceans by 2030, effective management and detailed seafloor mapping are essential, especially in the mesophotic zone. We present a new workflow combining high‐resolution synthetic aperture sonar (SAS) and bathymetry surveys for efficient habitat characterization. In 6 h, we mapped ~5 km2 of a mesophotic reef,
Ole Johannes Ringnander Sørensen   +12 more
wiley   +1 more source

Mellin Transforms of Multivariate Rational Functions [PDF]

open access: yesJournal of Geometric Analysis, 2011
This paper deals with Mellin transforms of rational functions $g/f$ in several variables. We prove that the polar set of such a Mellin transform consists of finitely many families of parallel hyperplanes, with all planes in each such family being integral translates of a specific facial hyperplane of the Newton polytope of the denominator $f$.
Mikael Passare, Lisa Nilsson
openaire   +3 more sources

Lp$L^p$‐norm bounds for automorphic forms via spectral reciprocity

open access: yesProceedings of the London Mathematical Society, Volume 130, Issue 6, June 2025.
Abstract Let g$g$ be a Hecke–Maaß cusp form on the modular surface SL2(Z)∖H$\operatorname{SL}_2(\mathbb {Z}) \backslash \mathbb {H}$, namely an L2$L^2$‐normalised non‐constant Laplacian eigenfunction on SL2(Z)∖H$\operatorname{SL}_2(\mathbb {Z}) \backslash \mathbb {H}$ that is additionally a joint eigenfunction of every Hecke operator. We prove the L4$L^
Peter Humphries, Rizwanur Khan
wiley   +1 more source

Non-abelian Mellin transformations and applications

open access: yesForum of Mathematics, Sigma, 2022
Abstract We study non-abelian versions of the Mellin transformations, originally introduced by Gabber-Loeser on complex affine tori. Our main result is a generalisation to the non-abelian context and with arbitrary coefficients of the t-exactness of Gabber-Loeser’s Mellin transformation.
Yongqiang Liu   +2 more
openaire   +2 more sources

Patterns in the chaos: Scale and the spatiotemporal dynamics of coral reef fish assemblages on the Great Barrier Reef

open access: yesEcosphere, Volume 16, Issue 5, May 2025.
Abstract In the Anthropocene, understanding and managing ecological communities requires the characterization of natural spatiotemporal ecosystem dynamics. Complex ecosystems may appear chaotic and unstructured, making long‐term monitoring programs with hierarchical sampling designs ideal for investigating ecological patterns at multiple scales.
Daniela M. Ceccarelli   +5 more
wiley   +1 more source

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