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A sweeping preconditioner for time-harmonic Maxwell’s equations with finite elements
Maxwell’s equations Frequency domain Finite element methods Preconditioners Fast solvers Perfectly matched layers Block LDLt factorization High-frequency waves
2015/7/14
This paper is concerned with preconditioning the stiffness matrix resulting from finite element discretizations of Maxwell’s equations in the high frequency regime. The moving PML sweeping preconditio...
Irreducible characters taking root of unity values on p-singular elements
Irreducible characters unity values on p-singular elements
2011/1/20
In this paper we study finite p-solvable groups having irreducible com-plex characters χ ∈ Irr(G) which take roots of unity values on the p-singular elements of G.
A hypothetical answer to the question of when a sufficiently large number of elements confirm that the set is infinite
elements confirm the set is infinite
2010/11/23
We present a conjecture on integer arithmetic which implies that there is an algorithm that for each recursively enumerable set M \subseteq \mathbb{N} given by a Diophantine representation computes a...
The number of certain rankings and hierarchies formed from labeled or unlabeled elements and sets
enumerative combinatorics rankings hierarchies
2010/9/17
Certain types of combinatorial rankings and hierarchies of labeled or unlabeled elements are presented along with their counting formulas.
Some elements of Dynamic Geometry and optimization in Physics
Geometry and Physics fractals compatibility criteria growth process accommodation
2009/2/25
The strong connection of the Physics and Geometry is wellknown,
beginning with the roots in the geometrical similitude of the important
method of the Physics similarity, up to the recent development...
Some elements of Dynamic Geometry and optimization in Physics
Geometry and Physics fractals compatibility criteria growth process accommodation
2009/1/7
The strong connection of the Physics and Geometry is wellknown,
beginning with the roots in the geometrical similitude of the important
method of the Physics similarity, up to the recent development...
Elements of a Global Operator Approach to Wess-Zumino-Novikov-Witten Models
Elements Global Operator Wess-Zumino-Novikov-Witten Models
2010/10/29
Elements of a global operator approach to the WZNW models for compact Riemann surfaces of arbitrary genus g with N marked points were given by Schlichenmaier and Sheinman. This contribution reports o...