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Two questions related to Arrays

  • To: mathgroup at
  • Subject: [mg113289] Two questions related to Arrays
  • From: Sam Takoy <sam.takoy at>
  • Date: Fri, 22 Oct 2010 01:35:49 -0400 (EDT)


First, why doesn't the following return the first two elements of the 
outer list:

Cases[{{{1}, {2}}, {3, 4}, {{5}, 6}}, _Array]

Second, I'm looking for help writing a function


that returns Outer[Times, u] where u only includes the input variables 
that are Arrays.

Many thanks in advance,


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