Top network posts

• 70 Why is the complex plane shaped like it is?
• 17 Intersection of infinite sets is infinite?
• 12 $1$ heap of sand $+\ 1$ heap of sand $= 1$ heap of sand?
• 9 Confusion about group theory; can you use the union as group operation?
• 7 $(-1)^0$ , calculating zeroth power of a negative number
• 7 How many functions are there from $\mathbb Z$ to $\mathbb Z$?
• 6 Show that if a convex polygon is entirely inside another convex polygon, then the outer polygon has perimeter greater than or equal to the inner one.
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