/[escript]/trunk/doc/user/lumping.tex
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revision 3382 by jfenwick, Thu Nov 25 00:43:18 2010 UTC revision 3384 by ahallam, Thu Nov 25 03:28:01 2010 UTC
# Line 115  For the full mass matrix, the accelerati Line 115  For the full mass matrix, the accelerati
115  are identical.  are identical.
116    
117  The displacement solution is depicted in Figure~\ref{FIG LUMPING VALET C}. The  The displacement solution is depicted in Figure~\ref{FIG LUMPING VALET C}. The
118  domain utilised order $1$ elements (for order $2$ both  domain utilised order $1$ elements (for order $2$, both
119  lumping methods are unstable). The solutions for the exact and the full mass  lumping methods are unstable). The solutions for the exact and the full mass
120  matrix approximation are almost identical while the lumping solutions, whilst  matrix approximation are almost identical while the lumping solutions, whilst
121  identical to each other, exhibit a considerably faster wave-front propagration  identical to each other, exhibit a considerably faster wave-front propagration

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