user173856
  • Member for 7 years, 4 months
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5 answers
38 votes
2k views
21 bookmarks
Is every path with this property shorter than another path with the same endpoints?
2 answers
15 votes
1k views
5 bookmarks
A question about certain sets of permutations of the ordered pairs $(1,1),(1,2),\cdots,(1,n),\cdots,(n,1),(n,2),\cdots,(n,n)$
0 answers
13 votes
476 views
5 bookmarks
Is it possible that the following integral is $0$?
1 answers
12 votes
382 views
2 bookmarks
An interesting inequality
2 answers
10 votes
316 views
1 bookmarks
a question about connected open sets in $R^2$
1 answers
8 votes
404 views
2 bookmarks
An interesting integration
1 answers
7 votes
220 views
1 bookmarks
The determinant of a $4\times4$ matrix associated to some specific polynomial as follow
1 answers
7 votes
398 views
1 bookmarks
The anti-symmetrization of a kind of polynomials in $\mathbb{Z}[x_1,x_2,\ldots,x_n]$
4 answers
7 votes
501 views
1 bookmarks
The coefficient of a specific monomial of the following polynomial
1 answers
6 votes
713 views
Is the following integral nonzero?
2 answers
6 votes
476 views
A question about homogenous polynomials of degree $\frac{n(n-1)}{2}$
2 answers
6 votes
289 views
1 bookmarks
The coefficient of a specific monomial in the expansion of the following polynomial
1 answers
5 votes
145 views
2 bookmarks
For what graph does the following algebraic property hold?
1 answers
5 votes
177 views
A decomposition of $w_0$ which is similar to the reduced decomposition
0 answers
5 votes
128 views
2 bookmarks
Expectation of a specific random variable on the probability space of $n\times n$ matrices over $\{0,1\}$
2 answers
5 votes
184 views
2 bookmarks
another question about connected open sets in $R^2$
1 answers
4 votes
247 views
The class of $(-1,0,1)$-matrices with all row sums and column sums equal to $0$
0 answers
4 votes
256 views
1 bookmarks
Is the following integral positive or not?
1 answers
4 votes
331 views
A question about minimal graph of diameter $2$
1 answers
4 votes
328 views
1 bookmarks
Two similar integrals
0 answers
4 votes
203 views
1 bookmarks
An operator derived from the divided difference operator $\partial_{w_0}$
1 answers
4 votes
242 views
1 bookmarks
A partition of the set of all $n\times n\ (0,1)$-matrices
1 answers
3 votes
113 views
How many $2d$-elements subsets with specific property at most can we choose from $\{1,2,\cdots,n\}$
1 answers
3 votes
312 views
Does there exist a Lebesgue nonmeasurable set $E$ in $\mathbb{R}$ satisfies that $E\cap A$ is a Borel null set for every Borel null set $A$?
1 answers
3 votes
149 views
The sign of the following integral
0 answers
3 votes
108 views
When does the constant term in the following expansion is nonzero?
1 answers
3 votes
118 views
1 bookmarks
A question about prime elements in a specific integral domain
0 answers
3 votes
79 views
Searching a specific matrix whose determinant is a product which is similar to the Vandermonde determinant
1 answers
3 votes
427 views
the existence of a real polynomial satisfying the following property
2 answers
2 votes
206 views
An inner product on the vector space $\mathbb{R}[x_1,\cdots,x_n]_m$