Results 211 to 220 of about 635,864 (319)

Space‐Time Smoothness and Parsimony in Covariance Functions

Mathematical 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, Emilio Porcu, Moreno Bevilacqua   +2 more
wiley   +1 more source

Applications of algebra and algebraic number theory in combinatorics [PDF]

, 2020
openaire   +1 more source

Khovanov Laplacian and Khovanov Dirac for knots and links. [PDF]

J Phys Complex
Jones B, Wei GW.
europepmc   +1 more source

On Generalized Avicenna Numbers

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT Avicenna numbers that we define in this paper, are a class of figurate numbers, including icosahedral, octahedral, tetrahedral, dodecahedral, rhombicosidodecahedral numbers and cubes, play a key role in mathematics, physics and various scientific fields.
Melih Göcen, Yüksel Soykan
wiley   +1 more source

Quantitative approximate definable choices. [PDF]

Math Ann
Lerario A, Rizzi L, Tiberio D.
europepmc   +1 more source

Algebraic Combinatorics on Trace Monoids: Extending Number Theory to Walks on Graphs

, 2017
Pierre-Louis Giscard, Paul Rochet
openalex   +2 more sources

Hyperchaotic color image encryption using eight-base DNA complementary rules and extended Zigzag transform. [PDF]

PLoS One
Yang B.
europepmc   +1 more source

The effect of concomitant gradient fields on MRI with long readout radial‐based trajectories

Magnetic Resonance in Medicine, EarlyView.
Abstract Purpose To demonstrate in theory and practice that concomitant gradient fields (CCGF) can produce substantial imaging artifacts in scans utilizing radial‐based trajectories and to provide strategies to mitigate these effects. Theory and Methods A framework was developed to relate concomitant gradient phase to local point‐spread‐function ...
Michael A. Malmberg, Henrik Odéen, Seong‐Eun Kim, Dennis L. Parker   +3 more
wiley   +1 more source

Exploring Ground and Excited States Via Single Reference Coupled-Cluster Theory and Algebraic Geometry. [PDF]

J Chem Theory Comput
Sverrisdóttir S, Faulstich FM.
europepmc   +1 more source

Uncertainty Quantification for Nonlinear Vibration of Supercritical Drive Shaft With a Dry Friction Damper

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT The supercritical drive shaft is becoming increasingly popular in helicopter transmission system. Dry friction dampers are specially employed to ensure the supercritical shafts crossing the critical speed safely. Due to design tolerances, manufacturing errors and time‐varying factors, the parameters of the damper are inherently uncertain ...
Liyao Song, Meijun Liao, Weifang Chen, Rupeng Zhu, Dan Wang   +4 more
wiley   +1 more source