Results 41 to 50 of about 1,461,926 (181)

Implicit Equations of the Henneberg-Type Minimal Surface in the Four-Dimensional Euclidean Space

open access: yesMathematics, 2018
Considering the Weierstrass data as ( ψ , f , g ) = ( 2 , 1 - z - m , z n ) , we introduce a two-parameter family of Henneberg-type minimal surface that we call H m , n for positive integers ( m , n ) by using the ...
Erhan Güler   +2 more
doaj   +1 more source

Parallel Vectors Extraction using Bézier Clipping

open access: yesComputer Graphics Forum, EarlyView.
Abstract In this paper, we propose a novel local feature extraction algorithm for the parallel vectors (PV) operator. Our method is based on Bézier clipping, which is a bracketing‐based root finding method that is commonly‐used in computer‐aided geometric design.
Nico Daßler, Tobias Günther
wiley   +1 more source

A note on the generalized Weierstrass representation

open access: yes, 2002
8 pages ...
Martina, L.   +2 more
openaire   +2 more sources

Deep reinforcement learning for multi‐restart metaheuristics: an environment design for a hybrid of unbiased exploratory search and covariance matrix adaptation evolution strategy

open access: yesInternational Transactions in Operational Research, EarlyView.
Abstract Multi‐restart metaheuristics can be highly effective for complex optimization problems, yet their performance depends critically on how restarts and algorithmic parameters are selected. This paper introduces a reinforcement learning approach for managing restart‐level decisions and parameter configurations in the UES–CMA‐ES hybrid ...
Antonio Bolufé‐Röhler, Bowen Xu
wiley   +1 more source

Cauchy Problem for a Darboux Integrable Wave Map System and Equations of Lie Type

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2013
The Cauchy problem for harmonic maps from Minkowski space with its standard flat metric to a certain non-constant curvature Lorentzian 2-metric is studied.
Peter J. Vassiliou
doaj   +1 more source

Measure‐valued processes for energy markets

open access: yesMathematical Finance, Volume 35, Issue 2, Page 520-566, April 2025.
Abstract We introduce a framework that allows to employ (non‐negative) measure‐valued processes for energy market modeling, in particular for electricity and gas futures. Interpreting the process' spatial structure as time to maturity, we show how the Heath–Jarrow–Morton approach can be translated to this framework, thus guaranteeing arbitrage free ...
Christa Cuchiero   +3 more
wiley   +1 more source

Kerr Geodesics in Terms of Weierstrass Elliptic Functions

open access: yes, 2023
We provide a code package written in Wolfram Mathematica to calculate the motion of test particles around a Kerr black hole. The novel analytical solutions describe both timelike and null geodesics.
Hackmann, Eva   +2 more
core   +1 more source

On a Double Series Representation of $\pi$

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2016
This paper proposes a new representation of $\pi$ as a double series. This representation follows from the relation between the Weierstrass $\wp$-function and the Jacobi theta-function.
E. Galushina
doaj  

Traveling and soliton waves and their characteristics in the extended (3+1)-dimensional Kadomtsev–Petviashvili equation in fluid

open access: yesPartial Differential Equations in Applied Mathematics
In this work, the extended (3+1)-dimensional Kadomtsev–Petviashvili model, which explains the development of nonlinear, long waves with tiny amplitudes and a gradual dependency on the transverse coordinate, is solved in terms of traveling waves. In order
Islam Samir   +3 more
doaj   +1 more source

Information‐Theoretic Approach to Financial Market Modeling

open access: yesMathematical Finance, EarlyView.
ABSTRACT The paper treats the financial market as a communication system, using four information‐theoretic assumptions to derive an idealized model with only one parameter. State variables are scalar stationary diffusions. The model maximizes the surprisal of the market and minimizes the Kullback–Leibler divergence between the benchmark‐neutral pricing
Eckhard Platen
wiley   +1 more source

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