Top network posts

• 95 What allows us to use imaginary numbers?
• 55 What is a topological space good for?
• 44 Do all aircraft carry depleted uranium as counterweights?
• 44 Why am I getting a strange double quote (“) in Open Office instead of the ordinary one (")?
• 43 Four color theorem disproof?
• 42 Is there a known non-euclidean geometry where two concentric circles of different radii can intersect? (as in the novel "The Universe Between")
• 41 Why is more music written in sharp keys than flat keys?
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