JPhrases/Rank
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2B. Rank
m0=: +/ sum (column sums of a matrix) m1=: +/"1 sum vectors (row sums of a matrix) d2=: *"0 _ outer product; same as */ m3=: +/@(*"1 _) inner product; same as +/ .*
| m0=: +/ | sum (column sums of a matrix) |
| m1=: +/"1 | sum vectors (row sums of a matrix) |
| d2=: *"0 _ | outer product; same as */ |
| m3=: +/@(*"1 _) | inner product; same as +/ .* |