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 1d awarded Popular Question Oct8 awarded Nice Question Jul2 awarded Curious Apr9 awarded Yearling Mar21 awarded Popular Question Nov24 awarded Popular Question Nov12 awarded Popular Question Jun21 awarded Nice Question Apr9 awarded Yearling Nov27 comment Does there exist a sequence $\{a_n\}_{n\ge1}$ with $a_n < a_{n+1}+a_{n^2}$ such that $\sum_{n=1}^{\infty}a_n$ converges? Do you have any example sequences that even converge to 0? Nov27 accepted Steinhaus theorem (sums version) Jun10 comment Probabilistic paradox: Making a scratch in a dice changes the probability? So this last comment implies that there's nothing logically inconsistent about the first model, so the second model is taught because it is backed up empirically not because it's any better logically? Jun10 comment Simple probability problems But why do 15 have a probability of 2/36? seems a bit circular to me...I imagine you'll say it's because 1,2 and 2,1 are different ways to obtain a pair with 1 and 2 in it but that implies order matters? Apr9 awarded Yearling Jan11 asked derivative bounded by a constant multiple of the function Jan11 comment Derivative of a function is odd prove the function is even. yeah i guess c depends on x i just got that from the mvt, trying to see how the result follows. c is the mysterious number between 0 and x, $f(x)-f(0)=f'(c)x$ Jan11 comment Derivative of a function is odd prove the function is even. f and g are both equal to $g'(c)x+g(0)$ Jan11 asked Derivative of a function is odd prove the function is even. Jan8 comment Group of order 15 acting on a set of order 22 15,5 or 3 so must be 4 orbits of order 3 and 2 of order 5? Jan8 comment Group of order 15 acting on a set of order 22 Well stabilizer is a subgroup of G right so 1,3,5 or 15, but if it was 15 then we would have a fixed point which we don't. So 1,3, or 5.