| d0=: >:@<.@^. | Length to represent y in base x | 
| d1=: d0 # [ | Base to represent integer y in base x | 
| d2=: d1 #:] | Base x rep of decimal integer y | 
| m3=: #:@i.@>: | Binary reps of integers from 0 to y | 
| m4=: 10"_ d2 ] | Base 10 rep of decimal integer y | 
| m5=: 16"_ d2 ] | Base 16 rep of decimal integer y | 
| d6=: (>:@<.@^. # [) #: ] | Base x rep of decimal integer y | 
| d7=: ] #:~ >:@<.@^. # [ | Base x rep of decimal integer y | 
| m8=: 100"_ d2 ] | Base 100 rep of decimal integer y | 
| m9=: 0 1&#: | Whole and fractional parts of y | 
| m10=: 10 100 1000"_ #: ] | Mixed base 10 ^ 1 2 3 rep of y | 
| m11=: #. | Integer from Boolean list y | 
| m12=: <.@(10&^.)@(('.'&~: # ]) &.": % ]) | Number of decimal places in y | 
| m14=: ]&__ | Negative infinity | 
| m15=: _: | Positive infinity | 
| a16=: (&#.) (^:_1) | Base x rep of decimal integer y | 
| m17=: [: (%"1 [: ,:~ +./) ,:&1 | Fraction equivalent to y |