From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Fraga, Eric" <e.fraga@ucl.ac.uk>
Subject: Re: Latex single dollar math delimiter question
Date: Sun, 4 Aug 2019 12:07:38 +0000
Message-ID: <87lfw9kuba.fsf@ucl.ac.uk>
References: <871ry1ijj8.fsf@iki.fi>
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In-Reply-To: <871ry1ijj8.fsf@iki.fi> (Jarmo Hurri's message of "Sun, 04 Aug
 2019 08:31:07 +0300")
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To: Jarmo Hurri <jarmo.hurri@iki.fi>
Cc: "emacs-orgmode@gnu.org" <emacs-orgmode@gnu.org>

On Sunday,  4 Aug 2019 at 08:31, Jarmo Hurri wrote:
> Can someone explain why the single '$' characters below are not
> recognized as math delimiters?
>
> a /complex number/ $z =3D a + ib,$ where

What are you expecting?  What happens if you export the file to PDF?

By the way, you might be interested in the following configuration
snippet which makes org insert \(\) when you type a single $ (and a $ if
you type 2 of them in a row).

#+begin_src emacs-lisp :tangle "esf-org.el"
  ;; 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

--=20
Eric S Fraga via Emacs 27.0.50, Org release_9.2.4-399-g4e6222