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Sep
18
answered Two methods to integrate?
Sep
17
reviewed Approve suggested edit on Is this another identity of exponential formula
Sep
17
revised The limit of $(n!)^{1/n}/n$ as $n\to\infty$
added 1 character in body
Sep
17
revised Two reasons why $\int^{1}_{0}f(x) \,dx$ exists?
edited body
Sep
17
reviewed Approve suggested edit on Conditional probability of picking particular second letters in Scrabble, given the first letter picked
Sep
17
accepted When can I expect the derivative of an inequality to always hold true?
Sep
17
comment When can I expect the derivative of an inequality to always hold true?
@ drhab Thanks. I found this, the answer to which implies the very same: math.stackexchange.com/questions/64682/…. Boo.
Sep
17
asked When can I expect the derivative of an inequality to always hold true?
Sep
16
awarded  Excavator
Sep
16
revised Comparing $\pi^{e}$ and $e^{\pi}$
updated grammar
Sep
16
revised Is there any special name for a $n$-torus made by products of hyperspheres?
added 1 character in body
Sep
16
comment Sum of Squares of Harmonic Numbers
Given your interest in the harmonic numbers you may find this interesting about the Stirling numbers, which are related to the logarithm: functions.wolfram.com/IntegerFunctions/StirlingS1/03/…
Sep
16
reviewed Approve suggested edit on Reduced norms of matrix algebras
Sep
16
reviewed Approve suggested edit on Logs and indices questions
Sep
16
reviewed Approve suggested edit on Comparing the size of square roots
Sep
15
answered How to simplify abs(x)/x
Sep
15
reviewed Approve suggested edit on Prove that $\max\{|x_i|: 1 \leq i \leq n\} \leq \|\vec{x}\| \leq \sum_{i=1}^{n} |x_i|$
Sep
15
comment Special values $\psi \left(\frac12\right)$ and $\psi \left(\frac13\right)$
You may find it useful to work with the log-gamma function $\log\Gamma(z)$ since its derivative is $\Gamma'(z)/\Gamma(z)$.
Sep
15
revised The supremum of rationals that are less than a given number is equal to that number
deleted 1 character in body
Sep
15
revised Summation of $\sum_{k=0}^{n-1} z^k = 0$
updated the math notation