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In a Mma notebook math cell, how can one write an interval with Hoare-Ramshaw (two dots) interval notation? The obvious answer (\:2025) does not seem to work; two full stops produces odd spacing; and the inferior but crudely acceptable two full-stops surrounded by spaces produces an unwanted times symbol.

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  • $\begingroup$ What do you want to do with the resulting expression though? Is this only for notation / printing purposes, or do you need Mathematica to interpret that format mathematically and operate on it? $\endgroup$
    – MarcoB
    Commented Jan 25, 2016 at 18:19
  • $\begingroup$ It is only for the text. (So it will be printed.) $\endgroup$
    – Alan
    Commented Jan 25, 2016 at 18:29
  • $\begingroup$ Can't you simply make the expression a string then? "(1..3)" perhaps? Perhaps a bit more context as to your intended use may help us generate better answers. $\endgroup$
    – MarcoB
    Commented Jan 25, 2016 at 18:34
  • $\begingroup$ Please point to a proper typesetting anywhere online. $\endgroup$
    – David G. Stork
    Commented Jan 25, 2016 at 19:19
  • $\begingroup$ What is the "data type" that you want to display this way? Interval? Truth-value expression of the form a < x < b? $\endgroup$
    – march
    Commented Jan 25, 2016 at 19:20

1 Answer 1

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You can type \:2025 to get the unicode character.

If you prefer to use a keyboard alias, evaluate 

SetOptions[
  SelectedNotebook[], 
    InputAliases -> 
      Join[Options[SelectedNotebook[], InputAliases][[1, 2]], {"hr" -> "\:2025"}]]

in your note book, then EschrEsc will insert the unicode character ‥ into the cell where you currently typing.

Either way you will be able to produce text cells like

$\qquad$text

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  • $\begingroup$ I mentioned this possibility as not working in the original question. Do you actually get a display of the character? If so, what's your version and platform? I'm using Mma 10.2 on Win 64. $\endgroup$
    – Alan
    Commented Jan 27, 2016 at 23:16
  • $\begingroup$ @Alan. I'm running V10.3.1 on OS X 10.10.2. but it worked in earlier versions as well. I know you mentioned you tried typing in \:2025 -- my post is meant to tell you that it should work. $\endgroup$
    – m_goldberg
    Commented Jan 28, 2016 at 12:17

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