Who's this guy?

so yeah long time ago I read some shit about some mathematician etc.

He had 3 theories or questions or something like that and eventually they were all solved/proven/disproven/whatever.

Anyways I can't remember any details but I'd like to know his name since I can't find the articles I read anymore.  Any ideas?

>>11
Most people who do pre-calc don't realize they're doing analytic geometry, and most people who do calc don't even know the name Descartes. Forgive his ignorance, if you would.