⊥ — Decode⊥Y decodes binary digits along the first axis.
⊥1 0 1 0 ⍝ 10
B⊥Y evaluates digits Y in base(s) B. Scalar base expands; the first mixed-base entry is unused.
2⊥1 0 1 0 ⍝ 10
0x 60x 60x⊥1x 1x 1x ⍝ 3661x
For coefficient vector C, X⊥C evaluates the polynomial in descending powers.
3⊥2 4 5 ⍝ 35
Arrays contract the last base axis with the first digit axis. See Encode.