Zdroj TeX:

\small \mathbb A = \lbrace{( x_1, x_2, x_3) \in R^3; x_1 + x_2 - 2x_3 = 5}\rbrace , V^3(\mathbb R) = \lbrace{(x_1, x_2, x_3) \in \mathbb R^3; x_1 + x_ 2 - 2x_3 = 0}\rbrace