Do you know how to prove this curious inequality?

Learn more about the Lion City - Singapore! bit.ly/1XnTDpz

Have you read The Red and the Black? Its author Stendahl cared so much about truth and righteousness.

Polignac's conjecture is a special case of Dickson's conjecture

Be awed by the clash and interlacing of various cultures - learn more about Turkey bit.ly/1UOfyCD

How many kinds of infinity are there? asked Georg Cantor (1845-1918)

If you find this theorem complicated, try collapsing the circles O_1, O_2, O_3, O_4 into points and see what you get

IMO 2016 is very near

surely we have to include HK! bit.ly/29ghgfp (ps: our fantastic artist actually made a self portrait here!)

After three years of preparation, today is the first day of IMO 2016 hosted by Hong Kong!!! Are you excited? :D

Here we are at the Airport Buffer Hall counter to serve all of you. Our counter is next to the Currency Exchange.

@toncikokan hope you'll like it!

@the_wrAIter I have an answer to your question - here are the IMO 2016 shortlisted problems! *wink wink*

@the_wrAIter heck, even i do not know. we are both in the same position...

Good luck to all participants of IMO 2016, who are possibly on their flight to Hong Kong now! :D

Have you gotten your problem booklet 2015-2016 yet? We're distributing them at Hall VIII and LG7… instagram.com/p/BHo9oyEBVkr/

its all done! its time for some relaxation. :)

Relaxation for contestants, not for markers, nor leaders, really. Here's HK team leaders fighting for HK team.

Welcome to Disneyland!

The results are out! Are you excited? :)