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user111
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83 Answers

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14 votes
Accepted

Find the maximum of $|a_{p}|$, if $a_0+a_1x+\dots+a_nx^n:[-1,1]\mapsto [-1,1]$

11 votes
Accepted

approximating the $|x|$ function

10 votes
Accepted

Complex plane minus Cantor set admits non-constant bounded harmonic function

10 votes
Accepted

Any reference for the series expansion of $\Bigr[-\log(1-t)\Bigr]^x$?

10 votes

Recurrence of Legendre polynomial roots/ quadrature points

8 votes
Accepted

Find structure geometry of $A_1, A_2,...,A_n$ such that $\prod_{i<j} A_iA_j$ is maximum

7 votes
Accepted

Half spaces free of roots of a given polynomial

7 votes
Accepted

Riemann-Hilbert and orthogonal polynomials

7 votes

Supremum norm of certain quantity

7 votes
Accepted

Second order differentiability of subharmonic function almost everywhere?

6 votes
Accepted

Given any sequence of interpolating nodes, can we find a continuous function $f$ whose interpolating polynomials doesn't converge to $f$ point-wise

6 votes
Accepted

Real vs complex norm for polynomials

5 votes
Accepted

How to compute the following integral $I_{\alpha,\beta}$

5 votes

Cumulative integral of the Marchenko-Pastur density for Wishart eigenvalues

5 votes
Accepted

Lower bound for polynomials

5 votes
Accepted

Is there a generalisation of the Vivanti-Pringsheim theorem for several variables?

4 votes
Accepted

Sturm Liouville problems for non-classical orthogonal polynomials

4 votes

Literature request: Functional capacities

4 votes
Accepted

L1 analog of Bernstein's inequality

4 votes
Accepted

Padé multipoint approximants of the exponential function

4 votes
Accepted

Minimax Approximation to Sine Function on interval [-K, K]

4 votes
Accepted

A bounded polynomial having bounded coefficients: several variables

4 votes

Rate of convergence of Padé approximants

3 votes

Most general conditions for (weak or classical) solutions to Poisson's equation

3 votes
Accepted

Measure for which it's logarithmic potential is continuous

3 votes
Accepted

An inequality of T. Carleman

3 votes
Accepted

Lelong numbers and integrability of psh functions

3 votes

Does every positive continuous function have a non-negative interpolating polynomial of every degree?

3 votes
Accepted

A version of the Portmanteau theorem - reference request

3 votes

Cubic splines convergence?

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