Testing double backslash inline and display math delimiters.
Inline math with double backslash: \\(x^2 + y^2 = z^2\\) in text.
Display math with double backslash:
\\[ \int_0^\infty e^{-x^2} dx = \frac{\sqrt{\pi}}{2} \\]
More inline: \\(\alpha + \beta = \gamma\\) and \\(E = mc^2\\).
Inline display math with double backslash: \\[ E = mc^2 \\] in text.