Saddle-point system  
Bramble_pac   Bramble-Pasciak (ppt)  
Normal (1) Matrix (pdf)  
part1,    part2,    part3  idea  
Abstract Theory for (Saddle Point Problem)  
seminar 1may2012  
Math Seminar 6Nov2013 (Preconditioning Technique for Darcys Law in Porous Media)  
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