√
√ 𝕩
Pervasive.
√ 2 1.414213562373095
𝕨 √ 𝕩
𝕨
𝕩
2 √ 2 1.414213562373095 1‿2‿3‿4 √ 4 ⟨ 4 2 1.587401051968199 1.414213562373095 ⟩