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Pfaffian

the Pfaffian of a skew-symmetric matrix
Syntax 

Pfaffian(M:MAT)

where M is skew-symmetric.  The resulting type depends on the entries
of the matrix.

Description
This function returns the Pfaffian of M.

Example 
  Use R ::= QQ[x,y];
  Pfaffian(Mat([[0,y],[-y,0]]));
y
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See Also