Re: [Bug-apl] multiple inner product

[Jay Foad]

On 7 July 2016 at 03:59, Kacper Gutowski <address@hidden> wrote:

The standard explicitly says A f.g B ←→ f/A g B when A & B vectors.

 

(I think you meant ⊂f/A g B on the RHS?)

But in the +.(+.+) case, it's Dyalog that gives unexpected results:

      +/A(+.+)B
  33 66  66 66
      A+.(+.+)B
  99 132

The reason for this is that, despite what the standard says, Dyalog actually implements A f.g B ←→ f/A g¨ B:

      A+.(+.+)B

  99 132

      +/A+.+¨B

  99 132

Jay.