Including mathematical symbols in forum postings  Printable Version + HP Forums (https://archived.hpcalc.org/museumforum) + Forum: HP Museum Forums (https://archived.hpcalc.org/museumforum/forum1.html) + Forum: Old HP Forum Archives (https://archived.hpcalc.org/museumforum/forum2.html) + Thread: Including mathematical symbols in forum postings (/thread232947.html) 
Including mathematical symbols in forum postings  Nick_S  10172012 Is there any way to include the HTML codes to obtain mathematical symbols e.g., π ∞ or ∑ etc., so that we can see the actual symbols in our postings? Nick
Edited: 17 Oct 2012, 3:59 a.m.
Re: Including mathematical symbols in forum postings  SteveH  10172012 I was hoping that one can just enter the Unicode characters for these directly but the forum preview renders them as html codes (e.g. these are Unicode symbols π ∞ ∑).
Re: Including mathematical symbols in forum postings  Didier Lachieze  10172012 One way could be to use GIF/PNG images such as the ones HERE.
For example:
Re: Including mathematical symbols in forum postings  Nick_S  10172012 That is a clever solution, but fragile. If the MoHPC web site could duplicate the PNG symbol web page locally then links to symbols in postings would not break if the original site changes or disappears.
The copyright terms of the original page seem to allow this: All images and text displayed on this web page are placed in the public domain by the author, per the Creative Commons Public Domain Dedication [external]."
Nick Edited: 17 Oct 2012, 8:20 a.m.
Re: Including mathematical symbols in forum postings  Luiz C. Vieira (Brazil)  10172012 Hi. What a finding! C'est magnifique! Thanks for sharing, I was not aware of that  and the page was last revised in January 2008... (reminds me the deep web and the Onion browser; what the f*** do we know) I for one have now a pot of gold, will use this resource pretty often, not only here but elsewhere. Merci!
Luiz (Brazil) Edited: 17 Oct 2012, 8:31 a.m.
Re: Including mathematical symbols in forum postings  Thomas Klemm  10172012 Another solution is described in this article:
Cheers Re: Including mathematical symbols in forum postings  Don Shepherd  10172012
Quote: Yeah, the MoHPC does have many of those symbols here: http://www.hpmuseum.org/software/
Many MoHPC articles have used these symbols in the past.
Re: Including mathematical symbols in forum postings  Eddie W. Shore  10182012 Online Latex may be the way to go.. I do not know how to import images onto a message. :(
Eddie
Re: Including mathematical symbols in forum postings  Walter B  10182012 There a button called (Image) right below of the editing window ;)
Re: Including mathematical symbols in forum postings  Maximilian Hohmann  10182012 Quote:
Yes, but you must store that picture somewhere in the web and post a link here. Unless this forum has a hidden function that allows users to import pictures...
Re: Including mathematical symbols in forum postings  C.Ret  10182012 Quote: Re: Including mathematical symbols in forum postings  Thomas Klemm  10182012 You could save the image and convert it into a base64 string:
<img alt="" src="data:image/gif;base64,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" /> Unfortunately we can't include an image using a Data URI.
Cheers Re: Including mathematical symbols in forum postings  Thomas Klemm  10182012 It's only now that I realize that you can select URL encoded in the box at the bottom. Cool!
Thanks for pointing that out.
PS: You can safely ignore my post bellow. I didn't understand you correctly.
Quote: Not exactly. It's a link to latex.codecogs.com. When the site is down the image can't be shown. Embedding it as base64 encoded data URI would make it permanent.
Kind regards PS: IIRC it's possible to get access to an ftpaccount and upload files to this forum from where they can be linked to.
Edited: 18 Oct 2012, 3:51 p.m.
Re: Including mathematical symbols in forum postings  Marcus von Cube, Germany  10182012 The problem here is that the forum software is a little bit too smart and tries to check the URL for consistency. I tried to embed your code but it was posted as is, not as an image.
Re: Including mathematical symbols in forum postings  Thomas Klemm  10182012 arrowl.gif I hope this list makes it easier to choose.
Cheers Re: Including mathematical symbols in forum postings  Eddie W. Shore  10192012 So that is the secret.
Thanks C. Ret.
