Results 51 to 60 of about 2,905,950 (213)
Bond-Propagation Algorithm for Thermodynamic Functions in General 2D Ising Models
, 2007 Recently, we developed and implemented the bond propagation algorithm for calculating the partition function and correlation functions of random bond Ising models in two dimensions.
A. George +8 more
core +1 more source
Water Resources Research, Volume 61, Issue 6, June 2025.Abstract The ECOsystem Spaceborne Thermal Radiometer Experiment on Space Station (ECOSTRESS) collects thermal observations from the International Space Station to support evapotranspiration (ET) research at fine spatial resolutions (70 m × 70 m). Initial ET from ECOSTRESS Collection 1 was used in scientific research and applications, though subsequent ...
Zoe Amie Pierrat +13 more
wiley +1 more source
A new upper bound for the growth factor in Gaussian elimination with complete pivoting
Bulletin of the London Mathematical Society, Volume 57, Issue 5, Page 1369-1387, May 2025.Abstract The growth factor in Gaussian elimination measures how large the entries of an LU factorization can be relative to the entries of the original matrix. It is a key parameter in error estimates, and one of the most fundamental topics in numerical analysis. We produce an upper bound of n0.2079lnn+0.91$n^{0.2079 \ln n +0.91}$ for the growth factor
Ankit Bisain, Alan Edelman, John Urschel
wiley +1 more source
, 2015 The Erlangian approximation of Markovian fluid queues leads to the problem of computing the matrix exponential of a subgenerator having a block-triangular, block-Toeplitz structure.
Bini, D. A. +3 more
core +1 more source
Sketched and Truncated Polynomial Krylov Methods: Evaluation of Matrix Functions
Numerical Linear Algebra with Applications, Volume 32, Issue 1, February 2025.ABSTRACT Among randomized numerical linear algebra strategies, so‐called sketching procedures are emerging as effective reduction means to accelerate the computation of Krylov subspace methods for, for example, the solution of linear systems, eigenvalue computations, and the approximation of matrix functions.
Davide Palitta +2 more
wiley +1 more source
A close look at Newton–Cotes integration rules
Results in Nonlinear Analysis, 2019 Newton–Cotes integration rules are the simplest methods in numerical integration. The main advantage of using these rules in quadrature software is ease of programming.
Emre Sermutlu
doaj
Variable and Extended Precision (VRP) Accelerator Implemented in a 22 nm SoC
Electronics Letters, Volume 61, Issue 1, January/December 2025.We implemented a variable extended precision accelerator, with support of up to 512‐bit precision, in a 22 nm system‐on‐chip. We demonstrate its ability to improve convergence of linear solver by running conjugate gradient methods on the chip at 800 MHz working frequency.
Eric Guthmuller +5 more
wiley +1 more source
Time-Symmetric Rolling Tachyon Profile
, 2015 We investigate the tachyon profile of a time-symmetric rolling tachyon solution to open string field theory. We algebraically construct the solution of [arXiv:0707.4472] at 6th order in the marginal parameter, and numerically evaluate the corresponding ...
Longton, Matheson
core +1 more source
A stochastic roundoff error analysis for the convolution [PDF]
Mathematics of Computation, 1992 We study the accuracy of an algorithm which computes the convolution via Radix-2 fast Fourier transforms. Upper bounds are derived for the expected value and the variance of the accompanying linear forms in terms of the expected value and variance of the relative roundoff errors for the elementary operations of addition and multiplication.
openaire +1 more source
Checking roundoff errors using counterexample-guided narrowing [PDF]
Proceedings of the IEEE/ACM international conference on Automated software engineering, 2010 This paper proposes a counterexample-guided narrowing approach, which mutually refines analyses and testing if (possibly spurious) counterexamples are found. A prototype tool CANAT for checking roundoff errors between floating point and fixed point numbers is reported with preliminary experiments.
Do Thi Bich Ngoc, Mizuhito Ogawa
openaire +1 more source