Auwvax.312
net.lang.apl
utzoo!decvax!harpo!uwvax!greg
Thu Apr 8 14:39:20 1982
Quiz time
Here's another quiz question: (actually, this one is really tough as
far as I can tell, and I don't have a solution.)
produce an APL expression that computes the determinant of a matrix.
N.B. - I'm looking for an expression, not a function, so looping and
recursion are out.
I have a (very) partial solution - it works only for non-singular matrices
that would never have a zero on the diagonal in a left-to-right series of
pivoting operations.
Iverson proposed an operator for determining determinants and permanents
(sp?) (pigeon?) in a paper a while back, but using that would be cheating.
- Greg Johnson
U Wis - Madison
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