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char
  • Member for 6 years, 11 months
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question
5
Green's formula and traces in weighted Sobolev spaces
Mar 1, 2019
question
5
Lack of exponential $L^2_{t,x}$ decay for a heat equation with growing coefficients
Oct 30, 2019
question
3
On some points of Bari's theorem
Jan 2, 2018
question
3
Simple-looking inequality for Fourier series
Nov 25, 2021
question
2
A minimal sequence in $L^2([-\pi, \pi])$
Jan 2, 2018
question
2
Bounding the $L^2$ norm of a polynomial from below
Mar 21, 2019
question
2
Closed form for the inverse of a special transition matrix
Feb 17, 2021
question
1
Spectrum of Laplacian-like operator
May 2, 2020
question
1
Similarity to companion matrix, uniqueness
Feb 15, 2021
question
0
Limit (at infinity) for the lowest eigenvalue of a perturbed harmonic oscillator
Jan 13, 2018
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18
Bounding a polynomial from below
5
Distance to the boundary function in a disk