I was reading the following thread on comp.lang.apl: https://groups.google.com/d/msg/comp.lang.apl/ZmdHbyqSM4M/522hE9rDRTkJ
In it, it is suggested that the following statement will work: * (3 3⍴⍳9)×⍤1 ⍳3* However, GNU APL gives RANK ERROR here. Is that correct? Regards, Elias