#1252 matrix ^ zero

[Barton Willis]

We have

(%i1) matrix([0])^0;
(%o1) matrix([1])

but

(%i2) 0^0;
0^0 has been generated -- an error.

Similarly, [0]^0 --> [1].

(%o1) disagrees with the user documentation for
domxexpt. I think the code should be changed to
match the documentation --- the matrix ^ xxx code
in simpexpt should be changed to simply map the
power function onto the matrix elements.

[Stavros Macrakis]

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What about matrix([0])^^0? This currently gives matrix([1]). I'd think that <singular>^^0 would be just as undefined as 0^0.

-s