18,384 reputation
36896
bio website
location
age
visits member for 2 years
seen 3 mins ago

Aug
16
reviewed Close Looking for the name of a mathematical symbol that looks remotely like 1 (answer: indicator function)
Aug
15
awarded  Yearling
Aug
14
comment Table of LCM's vs. table of products
I think there'll be about as many numbers of the form lcm$(a,b)$. Ford counts integers having a divisor in an interval $[y,2y]$, and one should be able to adapt this to counting square-free integers with such a divisor. Of course, a square-free integer in the multiplication table arises also as lcm$(a,b)$.
Aug
14
reviewed No Action Needed Why does this example of global residue theorem not work?
Aug
13
reviewed No Action Needed Inverse Galois problem for $GL_2$ of a compact local ring
Aug
11
reviewed No Action Needed Matching moments in even dimensions
Aug
11
reviewed Close A problem upon function series
Aug
9
reviewed No Action Needed Integral inequality with Hardy's inequality
Aug
9
reviewed No Action Needed Groups where word problem is solvable, but not quickly?
Aug
7
reviewed No Action Needed Product of a Finite Number of Matrices Related to Roots of Unity
Aug
7
reviewed Looks OK Comparision theorem for distance function
Aug
5
reviewed Looks OK Generating function of alternating even terms in the Vandermonde Convolution
Aug
5
comment Polynomials vanishing modulo some integer $n$
A bit unclear to me what you are looking for. Suppose $p$ and $q$ are primes with say $q$ of size about $p^2$. Then $(t^p-t)q$ is a polynomial that is zero mod $n=pq$, and the coefficients are of size at most $q=o(n)$, and the degree is $p = o(p+q)$. Does that qualify as a counterexample?
Aug
4
reviewed Close Mean and variance for unequal samples
Aug
4
awarded  Nice Answer
Aug
3
reviewed Leave Closed Any interesting properties of the matrix $M:=(m_{ij})$ with $m_{ij}=min(i,j)$?
Aug
3
reviewed No Action Needed Is a pullback along a Dold fibration a homotopy pullback?
Aug
3
reviewed No Action Needed Ways to prove the fundamental theorem of algebra
Aug
3
reviewed Leave Closed Recent progress on the busy beaver problem?
Aug
3
comment Egyptian fractions similar to Erdos-Straus conjecture
This is an open problem, as Elsholtz comments in ams.org/journals/tran/2001-353-08/S0002-9947-01-02782-9/… (see the second para of the second page of the article).