In
linear algebra, a
symplectic maxtrix is a
2n by
2n complex
matrix A such that
AtJA = J,
J beeing the
2n by
2n skew-symmetric matrix:
- <math>J =
\begin{bmatrix}
Z & E_n \\
-E_n & Z \\
\end{bmatrix}
</math>
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