10,654 reputation
72560
bio website
location
age
visits member for 1 year, 2 months
seen 3 hours ago

7h
reviewed Looks Good What is the derivative of this function: $f(\mathbf{x})=\sum\limits_{k=1}^{n}x_k$ where $\mathbf{x}\in\{0,1\}^n$
1d
revised If $n > 2$, prove that the order of the multiplicative group of units modulo n, $U_n$, is even.
edited tags
1d
answered If $n > 2$, prove that the order of the multiplicative group of units modulo n, $U_n$, is even.
2d
reviewed Looks Good Generating Functions
2d
reviewed Looks Good Complex inner product aren't inner products.
2d
reviewed Approve suggested edit on Double Integral Proof
2d
reviewed Leave Closed Coordinate System on Manifold
2d
reviewed Leave Closed Euler Bernoulli beam
2d
reviewed Leave Closed Haar measure on ax+b group
2d
reviewed Leave Closed $\sum r 2^r$ series computation
Apr
14
reviewed Looks Good How can I find $\int\tan\;x\;\cos\;2x\;\mathrm dx$?
Apr
14
reviewed Looks Good Limit, solution in unusual way
Apr
14
reviewed Looks Good Integration with square root involved
Apr
14
reviewed Looks Good Integral of $\sqrt{1 + \sqrt{x}}$
Apr
14
reviewed Looks Good Showing $n!<e(\frac{n}{2})^n$
Apr
14
reviewed Approve suggested edit on Markovian birth-death process
Apr
14
reviewed Approve suggested edit on Problem inverting a function
Apr
14
reviewed Approve suggested edit on Easy as $3.14$ question
Apr
13
reviewed Leave Closed Does the empty set have a supremum or infimum?
Apr
13
reviewed Looks Good How to find the $n$ zeros of $\displaystyle1+z^n$?