Square Image Of Or Equal To (⊑)

⊑ 𝕩: First

First element of 𝕩.

    ⊑ ⟨1, 2, 3⟩
1

    a ← 3‿3 ⥊ ↕9

    ⊑ a
0

𝕨 ⊑ 𝕩: Pick

Pick the element of 𝕨 at index 𝕩.

    2 ⊑ ⟨1, 2, 3⟩
3

    b ← 3‿3 ⥊ ↕9

    2‿0 ⊑ b
6