Top network posts

• 119 Why did no student correctly find a pair of $2\times 2$ matrices with the same determinant and trace that are not similar?
• 98 Is there any conjecture that we know is provable/disprovable but we haven't found a proof of yet?
• 84 How to represent "not an empty set"?
• 82 Simplicial Complex vs Delta Complex vs CW Complex
• 73 Prime number construction game
• 61 If polynomials are almost surjective over a field, is the field algebraically closed?
• 57 Can anyone give me a good example of two interestingly different ordinary cohomology theories?
• View more network posts →