I recently (i.e. yesterday) put a proposal for a 'Mathematics golf' stack exchange on area 51. This would follow the same concept as 'code golf' for which there is already a stack exchange for: http://codegolf.stackexchange.com/https://codegolf.stackexchange.com/. Please let me know your thoughts / support it if you think it is any good.
EDIT-in response to Jyrki Lahtonen's comment
Here is a quick summary of the concept of code golf:
- A problem/challenge is set in the question, to be solved using a computer program (e.g.: find all the prime numbers under 10,000).
- The answers given contain peoples attempts to solve this problem.
- The answers are scored based on the number of bytes they contain.
- The answer with the lowest number of bytes 'wins'.
The reason for the word 'golf' is because apparently golf has a similar scoring system.
The proposal given for a 'Mathematics golf' would be along the same lines, i.e. a problem (e.g. a calculation or derivation) is set to be solved using mathematics with answers containing peoples attempts. A similar scoring system could be used as in 'code golf' so that the shortest wins.