+)+ 𝕩: ConjugateComplex conjugate of 𝕩. BQN doesn't support complex numbers yet, so it has no effect.
+ 1 1 + ¯1 ¯1
𝕨 + 𝕩: Add𝕨 added to 𝕩. Either 𝕨 or 𝕩 can be a character, and if so, the other has to be an integer.
1 + 2 3 1 + 2‿3‿4 ⟨ 3 4 5 ⟩ 'a' + 4 'e'