Please leave comments here, identifying your favourite, or favourites.
I don’t like any logo of the suggested.
Here is a simple proposal: https://picasaweb.google.com/lh/photo/Ns8fhSWnpeh0Hdm6rgum5g?feat=directlink
I particularly like the first logo to use the "Sigma" idea. It's simple and direct, but the Sigma conveys an interesting double message. I would perhaps like something a bit brighter, though.
--WikiSysop 16:18, 10 May 2011 (UTC)
How about something simple, involving mathematical characters? For example: http://tinyurl.com/3arb6wy I just whipped this up in word so it's more of an idea that someone with photoshop skills may wish to take further
--Aindriu 22:29, 11 May 2011 (UTC)
I like this new suggestion from Russell: http://ixitol.com/PolyMath2.jpg. Not sure the black background works, but the bright and varied colours are great. It suggests variation, but with an ultimate cohesiveness. --WikiSysop 18:46, 13 May 2011 (UTC)
Re "Maybe combine..."; That could work... perhaps send out a hi-rez 'sigma' image, to whomever is interested, for trying out various color schemes. -- Russell
Author of "simple sigma" logo here. Sorry - didn't notice the discussion on here. I'll post a link to a vector version of the simple sigma logo and a brighter version in a bit. --IgorKofman
@IgorKofman - great, look forward to seeing it. --WikiSysop 14:14, 20 May 2011 (UTC)
I propose going with http://ixitol.com/PolyMath4.jpg. I'll wait a couple of days more for objections / alternate suggestions, and if none are made, I'll make that the logo. --WikiSysop 19:14, 24 May 2011 (UTC)
I'm also not wild about any of them, but I find it hard to say why. I think the best explanation I can think of is that they are insufficiently compact — they look more like words than logos. Maybe one could make a logo just out of a [math]\pi[/math] and a [math]\mu[/math]. -- Gowers
@gowers – The \pi-\mu idea sounds like it might work well, if anyone’s willing to put something together. My favourite at present is http://ixitol.com/PolyMath4.jpg – do you strongly dislike the suggestion? --WikiSysop 17:32, 25 May 2011 (UTC)
Here's a few variations on the simple sigma idea and the illustrator file: http://emberapp.com/igorkofman/images/adobe-illustrator-cs5 http://www.cl.ly/2i1L1N170U2s4528341d --IgorKofman
I did a trial of http://ixitol.com/PolyMath4.jpg. While I like the logo, I think it has two problems: (1) It's too small (this is connected to Tim Gowers' point, above); and (2) the background isn't transparent. It'd be nice to fix this. --WikiSysop 11:50, 29 May 2011 (UTC)