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Monadic Transpose means

Transpose

      mat
1 2 3
4 5 6

      ⍉ mat
1 4
2 5
3 6
Dyadic Transpose means

DyadicTranspose

      2 1 ⍉ mat
1 4
2 5
3 6
      1 1 ⍉ mat     ⍝ leading diagonal
1 5

Language Elements