matrix of all permutations of ⍳⍵[Hui 2016a, §19; McDonnell 2003; Hui 2015b]. …… perm ⍵ obtains by indexing each row of the matrix ⍒⍤1 ∘.=⍨ ⍳⍵ by 0,1+perm ⍵-1
Perry, Dan. Israel and the Quest for Permanence. McFarland & Co Inc., 1999. p. 46. El-Al, Israel's Airline. Gates of Jewish Heritage. (原始内容存档于2001-02-22)