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bryn earned this badge 8 times
mar 15 at 19:10Is $0$ a natural number?
dec 6 '11 at 13:35Why is the derivative of a circle's area its perimeter (and similarly for spheres)?
nov 8 '11 at 4:04Why is the volume of a cone one third of the volume of a cylinder?
may 20 '11 at 18:55Characterising functions $f$ that can be written as $f = g \circ g$?
dec 11 '10 at 3:18Are there any interesting semigroups that aren't monoids?
jul 27 '10 at 20:38Why is $x^0 = 1$ except when $x = 0$?
jul 22 '10 at 11:48Why does the series $\frac 1 1 + \frac 12 + \frac 13 + \cdots$ not converge?
jul 21 '10 at 12:43Is 1 a prime number?