Take the 2-minute tour ×
Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. It's 100% free, no registration required.

Is there a functon that counts the number of ways in which an even number can be expressed as a sum of two primes?

share|improve this question
3  
there is one, you just defined it... –  Xoff Aug 7 '12 at 12:55

1 Answer 1

up vote 4 down vote accepted

See Goldbach's comet at Wikipedia.

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.