Question

Can we approximate any eigenvalue of an infinite matrix via eigenvalues of some sequence of submatrices which approximates the matrix?

score 794 · Answer 1 · 2026-03-25 11:54:19

794

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Can we approximate any eigenvalue of an infinite matrix via eigenvalues of some sequence of submatrices which approximates the matrix?

Published on 25 Mar 2026 - 11:54

score 1.2k · Answer 2 · 2026-03-25 09:33:45

1.2k

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Why do deep neural networks work well?

Published on 25 Mar 2026 - 9:33

score 89 · Answer 3 · 2019-03-19 00:46:31

89

Views

Approximating the lateral derivatives

Published on 19 Mar 2019 - 0:46

score 75 · Answer 4 · 2026-02-23 01:21:42

75

Views

Smooth approximation (under supremum norm) of distance to algebraic set in $\mathbb{R}^n$.

Published on 23 Feb 2026 - 1:21

score 194 · Answer 5 · 2019-03-26 13:26:02

194

Views

Do all convergent sub-sequences of a sequence in a compact set $\mathcal K$ converge to the same element in $\mathcal K$?

Published on 26 Mar 2019 - 13:26

score 399 · Answer 6 · 2019-03-28 14:54:53

399

Views

Can we approximate continuous functions arbitrarily well with polynomials? (beyond Weierstrass )

Published on 28 Mar 2019 - 14:54

score 288 · Answer 7 · 2026-03-25 05:03:05

288

Views

A question on the existence and uniqueness of a cubic Hermite interpolant

Published on 25 Mar 2026 - 5:03

score 468 · Answer 8 · 2019-04-16 10:47:34

468

Views

What is the complete Partial Derivatives approximation formula to calculate the value of a function?

Published on 16 Apr 2019 - 10:47

score 132 · Answer 9 · 2026-03-25 11:12:12

132

Views

Tight upper bounds for a monotonically increasing non-linear recurrence

Published on 25 Mar 2026 - 11:12

score 63 · Answer 10 · 2019-04-30 15:34:08

63

Views

Approximate solution for high order polynomial (order 12)

Published on 30 Apr 2019 - 15:34

score 46 · Answer 11 · 2019-05-01 04:08:30

46

Views

Can $x^n$ be uniformly approximated by the combination of $x^{k^2}$?

Published on 01 May 2019 - 4:08

score 268 · Answer 12 · 2019-05-04 22:34:28

268

Views

Uniform approximation of $L^2$ basis by smooth functions with bounded derivatives of all orders

Published on 04 May 2019 - 22:34

score 62 · Answer 13 · 2019-05-07 00:36:04

62

Views

Elementary approximations to $\zeta(s)?$

Published on 07 May 2019 - 0:36

score 342 · Answer 14 · 2026-03-25 12:46:44

342

Views

Expressions approximating Generalized Harmonic Number (truncated polynomials with shrinking error term preferred)

Published on 25 Mar 2026 - 12:46

score 56 · Answer 15 · 2019-05-08 09:27:22

56

Views

Distance of the element from the subspace of $l_{1}.$

Published on 08 May 2019 - 9:27

List Question

Can we approximate any eigenvalue of an infinite matrix via eigenvalues of some sequence of submatrices which approximates the matrix?

Why do deep neural networks work well?

Approximating the lateral derivatives

Smooth approximation (under supremum norm) of distance to algebraic set in $\mathbb{R}^n$.

Do all convergent sub-sequences of a sequence in a compact set $\mathcal K$ converge to the same element in $\mathcal K$?

Can we approximate continuous functions arbitrarily well with polynomials? (beyond Weierstrass )

A question on the existence and uniqueness of a cubic Hermite interpolant

What is the complete Partial Derivatives approximation formula to calculate the value of a function?

Tight upper bounds for a monotonically increasing non-linear recurrence

Approximate solution for high order polynomial (order 12)

Can $x^n$ be uniformly approximated by the combination of $x^{k^2}$?

Uniform approximation of $L^2$ basis by smooth functions with bounded derivatives of all orders

Elementary approximations to $\zeta(s)?$

Expressions approximating Generalized Harmonic Number (truncated polynomials with shrinking error term preferred)

Distance of the element from the subspace of $l_{1}.$

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