Shahrooz's user avatar
Shahrooz's user avatar
Shahrooz's user avatar
Shahrooz
  • Member for 12 years, 3 months
  • Last seen more than a month ago
52 votes

Conway's lesser-known results

28 votes

Not especially famous, long-open problems which anyone can understand

20 votes

Where is number theory used in the rest of mathematics?

13 votes

Will quantum computing kill cryptography ?

11 votes

Virus community spread mathematical modeling

9 votes

Relevant mathematics to the recent coronavirus outbreak

9 votes
Accepted

Characterization of non-isomorphic graphs but isomorphic total graphs?

8 votes

How many solutions does $\frac{1}{x_1}+\frac{1}{x_2}+\cdots +\frac{1}{x_n}=1$ have?

8 votes

Tutte's conjecture on Petersen graphs

8 votes
Accepted

How many triangles can a connected graph with $n$ vertices and $m$ edges have?

7 votes

Math books for advanced high school students

7 votes

Does the Alternating group of degree $n>7$ have exactly one irreducible character of degree $n-1$?

7 votes

References: spectral analysis of the Laplacian operator

7 votes

Integral $\int_0^1 \int_0^1 \cdots \int_0^1\frac{x_{1}^2+x_{2}^2+\cdots+x_{n}^2}{x_{1}+x_{2}+\cdots+x_{n}}dx_{1}\, dx_{2}\cdots \, dx_{n}=?$

6 votes

Is it possible that both a graph and its complement have small connectivity?

6 votes

$p$-groups in which all normal abelian subgroups are cyclic

6 votes

An algebraic graph theory problem?

6 votes

How might M.C. Escher have designed his patterns?

5 votes

What are the major open problems in design theory nowaday?

5 votes

Important formulas in combinatorics

5 votes
Accepted

Effects of many degree-2 variable nodes in the Tanner graph during the decoding of LDPC codes

5 votes

How to quantify the error correction capacity of LDPC code?

5 votes

Existence of special graph

5 votes

Roots of a polynomial inside the unit circle

5 votes

Linear algebra underlying quantum entanglement?

4 votes
Accepted

diameter of Cayley graphs

4 votes
Accepted

reverse definition for magic square

4 votes

Open problems with monetary rewards

4 votes

How networks with high largest eigenvalues are more robust?

4 votes
Accepted

normalized laplacian spectrum of trees