User Twi

52 votes

7 answers

6k views

On an example of an eventually oscillating function

asked Feb 27, 2015 at 19:49

17 votes

2 answers

2k views

A set of integers whose factorial can be written as a product of two factorials

asked Mar 9, 2015 at 21:03

16 votes

1 answer

842 views

Hankel determinants of binomial coefficients

asked Dec 1, 2016 at 17:17

9 votes

3 answers

401 views

An explicit representation for polynomials generated by a power of $x/\sin(x)$

asked Aug 22, 2017 at 20:22

8 votes

1 answer

570 views

On entire functions with real and simple zeros

asked Sep 13, 2016 at 8:58

7 votes

1 answer

1k views

Origins of the Jacobi matrix

asked Jul 31, 2014 at 8:28

7 votes

1 answer

368 views

Hankel matrix commuting with a Jacobi matrix

asked Oct 5, 2014 at 15:30

7 votes

1 answer

304 views

Asymptotic behavior of a sequence of functions

asked Apr 12, 2015 at 13:59

6 votes

1 answer

342 views

Asymptotic behaviour of an integral

asked Sep 14, 2015 at 11:19

5 votes

2 answers

266 views

Number of Dyck paths with prescribed number of edges

asked Feb 20, 2015 at 16:54

5 votes

1 answer

129 views

An inverse spectral problem for Jacobi matrices (or orthogonal polynomials)

asked Dec 28, 2016 at 21:46

5 votes

0 answers

128 views

Is there a discrete Schrödinger operator with empty spectrum?

asked Feb 8, 2021 at 21:45

4 votes

1 answer

99 views

Convexity of a set related to certain class of Laurent polynomials

asked Sep 22, 2016 at 20:33

4 votes

0 answers

145 views

A Toeplitz variant of the Hilbert matrix

asked Jan 30, 2018 at 12:05

4 votes

1 answer

137 views

Jacobi elliptic functions with modulus on the unit circle

asked Sep 8, 2015 at 14:43

4 votes

0 answers

235 views

A connection between basic hypergeometric series and number theory

asked Jan 29, 2016 at 13:26

3 votes

1 answer

210 views

Challenging problems concerning Jacobian elliptic functions with complex modulus

asked Oct 11, 2015 at 9:30

3 votes

0 answers

164 views

Spectral theory of Bochner integral operators

asked Nov 10, 2015 at 16:24

3 votes

2 answers

701 views

Polynomials orthogonal w.r.t. the logarithmic weight

asked Oct 5, 2014 at 16:29

3 votes

0 answers

101 views

A monotonicity property related to Laurent polynomials

asked Feb 21, 2017 at 19:09

3 votes

2 answers

269 views

A relation between norm and spectral radius for some matrix operators on Banach spaces $\ell^{p}$

asked Aug 6, 2020 at 14:34

2 votes

2 answers

390 views

Asymptotic behavior of a hypergeometric function

asked Dec 28, 2022 at 17:26

2 votes

1 answer

152 views

A problem from linear algebra and difference equations

asked Oct 13, 2016 at 16:42

2 votes

1 answer

81 views

Information on special matrices similar to Jacobi matrices

asked Jun 26, 2015 at 10:46

2 votes

1 answer

198 views

Asymptotic expansion of a sequence given by an integral with reciprocal Gamma function

asked Jul 9, 2015 at 14:54

2 votes

1 answer

201 views

An extreme of Jacobi elliptic function on an interval

asked Oct 6, 2015 at 12:34

2 votes

1 answer

127 views

On some curves of real values of a rational function

asked Apr 26, 2016 at 13:34

1 vote

2 answers

119 views

On the limit set of eigenvalues of banded Toeplitz Hessenberg matrices

asked Jun 18, 2016 at 22:11

1 vote

0 answers

94 views

Determinant formula related to solutions of a second-order recurrence

asked Jun 19, 2016 at 19:39

1 vote

2 answers

218 views

Norm of a matrix operator with a special structure

asked Apr 7, 2015 at 16:18

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34 Questions

On an example of an eventually oscillating function

A set of integers whose factorial can be written as a product of two factorials

Hankel determinants of binomial coefficients

An explicit representation for polynomials generated by a power of $x/\sin(x)$

On entire functions with real and simple zeros

Origins of the Jacobi matrix

Hankel matrix commuting with a Jacobi matrix

Asymptotic behavior of a sequence of functions

Asymptotic behaviour of an integral

Number of Dyck paths with prescribed number of edges

An inverse spectral problem for Jacobi matrices (or orthogonal polynomials)

Is there a discrete Schrödinger operator with empty spectrum?

Convexity of a set related to certain class of Laurent polynomials

A Toeplitz variant of the Hilbert matrix

Jacobi elliptic functions with modulus on the unit circle

A connection between basic hypergeometric series and number theory

Challenging problems concerning Jacobian elliptic functions with complex modulus

Spectral theory of Bochner integral operators

Polynomials orthogonal w.r.t. the logarithmic weight

A monotonicity property related to Laurent polynomials

A relation between norm and spectral radius for some matrix operators on Banach spaces $\ell^{p}$

Asymptotic behavior of a hypergeometric function

A problem from linear algebra and difference equations

Information on special matrices similar to Jacobi matrices

Asymptotic expansion of a sequence given by an integral with reciprocal Gamma function

An extreme of Jacobi elliptic function on an interval

On some curves of real values of a rational function

On the limit set of eigenvalues of banded Toeplitz Hessenberg matrices

Determinant formula related to solutions of a second-order recurrence

Norm of a matrix operator with a special structure