Top network posts

• 233 What is the importance of the Collatz conjecture?
• 212 Why can you turn clothing right-side-out?
• 70 Can't find the flaw in the reasoning for this proof by induction?
• 42 Is a prime factor of a number always less than its square root?
• 34 Uses of "Collatz induction"?
• 25 What is the simplest way to prove that the logarithm of any prime is irrational?
• 24 How to prove there are an infinite number of squarefree numbers of the form $2^p-1$?
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