401 citations
- Universidad Autónoma de MadridES142 papers
- Johns Hopkins UniversityUS116 papers
- Université Libre de BruxellesBE115 papers
- University of WarsawPL115 papers
- Brown UniversityUS113 papers
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- Charles UniversityCZ113 papers
- Eötvös Loránd UniversityHU113 papers
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- University College DublinIE113 papers
6 papers · 1 filter
On f(R) theories in two-dimensional spacetime
M. A. Ahmed
In recent years, theories in which the Einstien-Hilbert lagrangian is replaced by a function f(R) of the Ricci Scalar have been extensively studied in four-dimensional spacetime. I…
Diameter Perfect Lee Codes
Peter Horak, Bader F. AlBdaiwi
Lee codes have been intensively studied for more than 40 years. Interest in these codes has been triggered by the Golomb-Welch conjecture on the existence of the perfect error-corr…
Orbits of the Kepler problem via polar reciprocals
E. D. Davis
It is argued that, for motion in a central force field, polar reciprocals of trajectories are an elegant alternative to hodographs. The principal advantage of polar reciprocals is…
A study of the uniform accuracy of univariate thin plate spline interpolation
Aurelian Bejancu, Simon Hubbert
The usual power function error estimates do not capture the true order of uniform accuracy for thin plate spline interpolation to smooth data functions in one variable. In this pap…
On the Set of Circular Total Chromatic Numbers of Graphs
Mohammad Ghebleh
For every integer and every $\eps>0$ we construct a graph with maximum degree whose circular total chromatic number is in the interval $(r,r+\eps)$. This proves that…
Numerical study of the critical behavior of the Ashkin-Teller model at a line defect
Peter Lajko, Ferenc Igloi
We consider the Ashkin-Teller model on the square lattice, which is represented by two Ising models ( and ) having a four-spin coupling of strength, , between them. We int…