Re: Inequalities in math blocks

[Eric S Fraga]

Slightly off-topic but, just in case anybody is interested, here is some
code I use to allow me to easily get \(...\) by typing $:

#+begin_src emacs-lisp
  ;; from Nicolas Richard <theonewiththeevillook@yahoo.fr>
  ;; Date: Fri, 8 Mar 2013 16:23:02 +0100
  ;; Message-ID: <87vc913oh5.fsf@yahoo.fr>
  (defun yf/org-electric-dollar nil
    "When called once, insert \\(\\) and leave point in between.
  When called twice, replace the previously inserted \\(\\) by one $."
         (interactive)
         (if (and (looking-at "\\\\)") (looking-back "\\\\("))
             (progn (delete-char 2)
                    (delete-char -2)
                    (insert "$"))
           (insert "\\(\\)")
           (backward-char 2)))
  (define-key org-mode-map (kbd "$") 'yf/org-electric-dollar)
#+end_src

Typing two $ in a row inserts a single $.
-- 
: Eric S Fraga via Emacs 28.0.60, Org release_9.5-30-g9e71df
: Latest paper written in org: https://arxiv.org/abs/2106.05096