%-------------------------------------------------------------------------------
% UF Sparse Matrix Collection, Tim Davis
% http://www.cise.ufl.edu/research/sparse/matrices/Dziekonski/dielFilterV3clx
% name: Dziekonski/dielFilterV3clx
% [High-order vector finite element method in EM]
% id: 2387
% date: 2011
% author: A. Dziekonski, A. Lamecki, M. Mrozowski
% ed: T. Davis
% fields: name title A b id date author ed kind notes
% kind: electromagnetics problem
%-------------------------------------------------------------------------------
% notes:
% High order vector finite element method in electromagnetics       
%                                                                   
% The dielFilter* matrices came from analysis of a 4th-pole         
% dielectric resonator [4] generated with Finite Element Method.    
% The tetrahedral mesh of the structure was generated with the      
% Netgen mesher [2].  The matrices were used as an example in       
% our paper [3].                                                    
%                                                                   
% dielFilterV2clx - complex symmetric matrix (607,232 x 607,232),   
%     25,309,272 nonzero (real) and 728,900 nonzero (imag) elements.
%     First 109,108 unknowns correspond to lowest level base        
%     functions.                                                    
%                                                                   
% dielFilterV2real - real symmetric matrix (1,157,456 x 1,157,456)  
%     and 48,538,952 nonzero elements.  First 209,432 unknowns      
%     correspond to lowest level base functions.                    
%                                                                   
% dielFilterV3clx - complex symmetric matrix (420,408 x 420,408),   
%     32,886,208 nonzero (real) and 3,706,513 (imag) elements. First
%     24,716 unknowns correspond to lowest level base functions,    
%     next 116,152 unknowns correspond to the second level.         
%                                                                   
% dielFilterV3real - real symmetric matrix (1,102,824 x 1,102,824)  
%     and 89,306,020 nonzero elements. First 66,353 unknowns        
%     correspond to lowest level base functions, next 305,729       
%     unknowns correspond to the  second level.                     
%                                                                   
% All matrices are sparse and come with right-hand-sides.           
%                                                                   
% [2] J. Schoberl, "NETGEN An advancing front 2D/3D-mesh            
% generator based on abstract rules," Computing and Visualization   
% in Science, vol. 1, No. 1, pp.  41-52, July 1997                  
%                                                                   
% [3] A. Dziekonski, A. Lamecki, M. Mrozowski, Tuning A             
% Hybrid GPU-CPU V-cycle Multilevel Preconditioner for Solving      
% Large Real and Complex Systems of FEM Equations.                  
%                                                                   
% [4] F. Alessandri, M. Chiodetti, A. Giugliarelli; D. Maiarelli,   
% G. Martirano, D. Schmitt, L. Vanni and F. Vitulli.  The           
% electric-field Integral-equation method for the analysis and      
% design of a class of rectangular cavity filters loaded by         
% dielectric and metallic cylindrical pucks, Microwave Theory       
% and Techniques, IEEE Transactions on, vol. 52, no 8, pp.          
% 1790-1797, Aug. 2004.                                             
%-------------------------------------------------------------------------------
