7·î31Æü(¶â)  13:30  -- 15:00  Prof. Chisup Kim
                                  (Catholic University of America)
            ``Mortar method for the P1 nonconforming quadrilateral elements.''

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We analyze a mortar finite element method for second-order elliptic problems
using the P1 nonconforming quadrilateral elements introduced by Park and 
Sheen [SINUM, 41 (2003), 624-640]. We establish the same order of 
convergence as in the standard nonconforming method. The multiplier space, 
which plays an important role in both the implementation and the analysis 
of the mortar method, will be discussed in detail.