Small Tilde (˜)

𝔽˜ 𝕩: Self

Supplies 𝕩 as a left argument to 𝔽 (𝕩 𝔽 𝕩).

       1 + 1
2

       +˜ 1
2

𝕨 𝔽˜ 𝕩: Swap

Swaps the arguments of 𝔽 (𝕩 𝔽 𝕨).

       1 - 2
¯1

       1 -˜ 2
1