Results 31 to 40 of about 1,498,288 (136)

Asymptotics of linear recurrences with rational coefficients [PDF]

open access: yes, 1993
We give algorithms to compute the asymptotic expansion of solutions of linear recurrences with rational coefficients and rational initial conditions in polynomial time in the order of the ...
Gourdon, Xavier, Salvy, Bruno
core   +1 more source

Positioning Accuracy Analysis and Application for Worldview-1 Stereo Imagery [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2014
This article introduced the progress of processing the WorldView-1 satellite image by using the air triangulation method.And different adjustment models were used to improve the vendor provided RPC (Rational Polynomial Coefficients) accuracy. WorldVfew-1
Z. Xiao, B. Yang, H. Zhang
doaj   +1 more source

Fast Stochastic Surrogate Modeling via Rational Polynomial Chaos Expansions and Principal Component Analysis

open access: yesIEEE Access, 2021
This paper introduces a fast stochastic surrogate modeling technique for the frequency-domain responses of linear and passive electrical and electromagnetic systems based on polynomial chaos expansion (PCE) and principal component analysis (PCA).
Paolo Manfredi, Stefano Grivet-Talocia
doaj   +1 more source

Polynomial Interpretations over the Reals do not Subsume Polynomial Interpretations over the Integers [PDF]

open access: yes, 2010
Polynomial interpretations are a useful technique for proving termination of term rewrite systems. They come in various flavors: polynomial interpretations with real, rational and integer coefficients.
Neurauter, Friedrich, Middeldorp, Aart
core   +1 more source

Top Coefficients of the Denumerant [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2013
For a given sequence $\alpha = [\alpha_1,\alpha_2,\ldots , \alpha_N, \alpha_{N+1}]$ of $N+1$ positive integers, we consider the combinatorial function $E(\alpha)(t)$ that counts the nonnegative integer solutions of the equation $\alpha_1x_1+\alpha_2 x_2+
Velleda Baldoni   +5 more
doaj   +1 more source

Generalized Chebyshev Polynomials

open access: yesDiscussiones Mathematicae - General Algebra and Applications, 2018
Let h(x) be a non constant polynomial with rational coefficients. Our aim is to introduce the h(x)-Chebyshev polynomials of the first and second kind Tn and Un. We show that they are in a ℚ-vectorial subspace En(x) of ℚ[x] of dimension n.
Abchiche Mourad, Belbachir Hacéne
doaj   +1 more source

Improvement of VHR Satellite Image Geometry with High Resolution Elevation Models

open access: yesRemote Sensing, 2022
The number of high and very high resolution (VHR) optical satellite sensors, as well as the number of medium resolution satellites is continuously growing.
Ana-Maria Loghin   +3 more
doaj   +1 more source

Reducibility of Second Order Differential Operators with Rational Coefficients [PDF]

open access: yes, 2017
This paper will provide several results for the reducibility of second order differential operators. More specifically, we will discuss second order operators that factor into two first order operators with either; one constant coefficient and one ...
Geisbauer, Joe
core   +1 more source

Efficient Recursive Methods for Partial Fraction Expansion of General Rational Functions

open access: yesJournal of Applied Mathematics, 2014
Partial fraction expansion (pfe) is a classic technique used in many fields of pure or applied mathematics. The paper focuses on the pfe of general rational functions in both factorized and expanded form.
Youneng Ma, Jinhua Yu, Yuanyuan Wang
doaj   +1 more source

Dynamical behaviour of travelling wave solutions to the conformable time-fractional modified Liouville and mRLW equations in water wave mechanics

open access: yesHeliyon, 2021
In this current study, we described a modified extended tanh-function (mETF) method to find the new and efficient exact travelling and solitary wave solutions to the modified Liouville equation and modified regularized long wave (mRLW) equation in water ...
Abdulla - Al Mamun   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy