Top network posts

• 158 Is there a homology theory that counts connected components of a space?
• 44 How long is it possible to maintain concentration?
• 43 Does there exist $f:(0,\infty)\to(0,\infty)$ such that $f'=f^{-1}$?
• 39 What is the sum of sum of digits of $4444^{4444^{4444}}$?
• 35 Does $abab=baba$ imply commutativity in a Group of uneven order?
• 29 Interpretation of limsup-liminf of sets
• 28 Piecewise functions: Got an example of a real world piecewise function?
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