1,129 reputation
1418
bio website mathoverflow.net/users/19885/…
location Between Two Moments
age
visits member for 3 years, 7 months
seen Jul 20 at 11:48

$T$. $S$. $Eliot$, 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