User:Jon Awbrey/FONTS

Mathcal

\(X^\circ = [\mathcal{X}] = [x_1, x_2] = [u, v]\)

\(X \quad = \quad \langle \mathcal{X} \rangle \quad = \quad \langle u, v \rangle \quad = \quad \{ (u, v) \} \quad \cong \quad \mathbb{B}^2\)