bio | website | mathoverflow.net/users/19885/… |
---|---|---|
location | Between Two Moments | |
age | ||
visits | member for | 3 years, 7 months |
seen | Jul 20 at 11:48 | |
stats | profile views | 2,556 |
$T$. $S$. $Eliot$, Introduction to Dante's Inferno: " Hell is a place where nothing connects with nothing. "
$Johann$ $von$ $Neumann$: " In mathematics you don't understand things, You just get used to them. "
$A$. $A$. $Zinoviev$: " Where there are problems, there is life. "
$P$. $R$. $Halmos$: "I do believe that problems are the heart of mathematics, and I hope that as teachers, in the classroom, in seminars, and in the books and articles we write, we will emphasize them more and more, and that we will train our students to be better problem-posers and problem-solvers than we are. "
$Shahrooz$: " Physics is mirror front of universe, but mathematics is the rules of reflection. "
Jul 20 |
comment |
Can I find the gap between the two least eigenvalues of this special matrix A(t)?
Nice View @Poloni, but I suspect that the general form of the question can be reduces to the $I+L$, where $L$ is tridiagonal. |
Jul 14 |
revised |
Cayley graphs with special subgraphs and some related problems
Corrected spelling |
Jul 13 |
revised |
Cayley graphs with special subgraphs and some related problems
I pointed that I interest to non-trivial cases. |
Jul 13 |
comment |
Cayley graphs with special subgraphs and some related problems
Thanks @verret, you are right, but I interest to non-trivial case or some family of non-trivial cases. |
Jul 13 |
asked | Cayley graphs with special subgraphs and some related problems |
Jun 27 |
comment |
Can I find the gap between the two least eigenvalues of this special matrix A(t)?
@Tgh, can you give us some numerical results about your question? |
Jun 26 |
answered | How many triangles can a connected graph with $n$ vertices and $m$ edges have? |
Jun 14 |
answered | How networks with high largest eigenvalues are more robust? |
Jun 7 |
comment |
Existence of finite set of points in the revolving circles
Nice animation dear Joseph, thanks. |
Jun 7 |
revised |
Existence of finite set of points in the revolving circles
I added a weaker version of the question. |
May 30 |
comment |
Existence of finite set of points in the revolving circles
I mean $C$ contain strictly the point $x$, i.e, I like the interior case. |
May 30 |
asked | Existence of finite set of points in the revolving circles |
Dec 18 |
comment |
Open problems with monetary rewards
Dear Voloch, I think you are right. But it is a little strange for me, why mathematicians should forget the heritage of the great mathematician like MacWiliams? It is just $10$ dollar, and I think someone must accept it and pay it in the future. If I can pay, I will accept it, maybe a good news. |
Dec 17 |
answered | Open problems with monetary rewards |
Dec 11 |
awarded | Yearling |
Nov 14 |
awarded | Nice Answer |
Nov 5 |
answered | Math books for advanced high school students |
Sep 16 |
revised |
Non-DS circulant graphs
added 337 characters in body |
Sep 16 |
comment |
Non-DS circulant graphs
In general, the answer is no, even for special type of graphs. |
Sep 16 |
answered | Non-DS circulant graphs |