| m0=: >./ | List maximum or column maxima |
| d1=: >./ .* | Maximum of x weighted by y |
| d2=: <./ .* | Minimum of x weighted by y |
| d3=: +/ .= , | How many x in y? |
| m4=: +/"1 | Sum rows of y |
| m5=: >./-<./ | 1 less than range of y |
| m6=: [: >./ 0: , ] | Maximum of y, but at least 0 |
| m7=: <./ | List minimum or column minima |