Partial map from the place-based inversions (i,j){\displaystyle (i,j)} to the element-based inversions (S(i),S(j)){\displaystyle {\bigl (}S(i),S(j){\bigr )}} of a 4-element sequence S=(2,1,0,1){\displaystyle S=(2,1,0,1)}
Own work
WatchduckYou can name the author as "T. Piesk", "Tilman Piesk" or "Watchduck".