Geodesic
A hierarchical preconditioner for the mortar finite element method
Electronic transactions on numerical analysis, Tome 4 (1996), pp. 75-88
Mortar elements form a family of nonconforming finite element methods that are more flexible than conforming finite elements and are known to be as accurate as their conforming counterparts.
Classification : 65F30, 65N22, 65N30, 65N55
Keywords: domain decomposition, mortar finite element method, hierarchical preconditioner 
@article{ETNA_1996__4__a5,
     author = {Casarin,  Mario A. and Widlund,  Olof B.},
     title = {A hierarchical preconditioner for the mortar finite element method},
     journal = {Electronic transactions on numerical analysis},
     pages = {75--88},
     year = {1996},
     volume = {4},
     zbl = {0870.65105},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ETNA_1996__4__a5/}
}
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%A Widlund,  Olof B.
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Casarin,  Mario A.; Widlund,  Olof B. A hierarchical preconditioner for the mortar finite element method. Electronic transactions on numerical analysis, Tome 4 (1996), pp. 75-88. http://geodesic.mathdoc.fr/item/ETNA_1996__4__a5/