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 Apr6 awarded Popular Question Mar9 awarded Popular Question Aug20 awarded Teacher Jul2 awarded Curious May5 asked How to compute the pdf of a sum of iid random variable using discrete Fourier transform? Dec18 awarded Yearling Nov24 accepted Unlike Jensen's Inequality, can we upper bound $\log \sum_{i}{u_i \exp(x_i)}$? Nov24 answered Unlike Jensen's Inequality, can we upper bound $\log \sum_{i}{u_i \exp(x_i)}$? Nov24 comment Unlike Jensen's Inequality, can we upper bound $\log \sum_{i}{u_i \exp(x_i)}$? @gammatester. Excuse me. I meant $\max_i |x_i|$. In other words, the infinite norm $||x||_\infty$, where $x = (x_1, x_2, ..., x_n)$. Nov22 asked Unlike Jensen's Inequality, can we upper bound $\log \sum_{i}{u_i \exp(x_i)}$? Nov12 awarded Notable Question Oct28 awarded Popular Question Feb4 accepted What is the combinatorial meaning of $\sum\limits_{R = 0}^{N}\binom{N}{r}\binom{N-R}{n-r} = \binom{N+1}{n+1}$? Feb4 asked What is the combinatorial meaning of $\sum\limits_{R = 0}^{N}\binom{N}{r}\binom{N-R}{n-r} = \binom{N+1}{n+1}$? Jan31 revised Find the equation of the tangent to the curve with exponential function I think the answer is y = 2ex-e/2. Jan31 reviewed Reviewed Find the equation of the tangent to the curve with exponential function Jan31 suggested approved edit on Find the equation of the tangent to the curve with exponential function Jan31 comment Find the equation of the tangent to the curve with exponential function I think it should be $2ex-\frac{e}{2}$ so that it passes through $(\frac{1}{2},\frac{e}{2})$. Jan23 accepted Is the multiplicative Chernoff bound stronger than additive one? Jan21 asked Is the multiplicative Chernoff bound stronger than additive one?