def latex(source: str):
    """
    Add a mathematical equation in latex math-mode syntax to the display.
    Instead of the traditional backslash escape character, the @ character is
    used instead to prevent backslash conflicts with Python strings. For
    example, \\delta would be @delta.

    :param source:
        The string representing the latex equation to be rendered.
    """
    r = _get_report()
    if 'katex' not in r.library_includes:
        r.library_includes.append('katex')

    r.append_body(render_texts.latex(source.replace('@', '\\')))
    r.stdout_interceptor.write_source('[ADDED] Latex equation\n')