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In elliptic regions, using again the incompressibility
and defining
 |
(A.17) |
the matrix
can be decomposed in a diagonal part
and a pure rotational part:
 |
(A.18) |
where
 |
(A.19) |
The eigenvectors matrix
is
 |
(A.20) |
and the exponential matrix reads
 |
(A.21) |
Stefano Musacchio
2004-01-09