cmk's user avatar
cmk's user avatar
cmk's user avatar
cmk
  • Member for 4 years, 11 months
  • Last seen this week
99 votes
Accepted

What is the theme of analysis?

13 votes

Where does $\pi^2$ appear spontaneously within Physical Phenomenon and Mathematics Equations?

11 votes

Terence Tao–type books in other fields?

8 votes
Accepted

Orthonormal basis for $\mathcal{L}^2([0,1])$

8 votes
Accepted

Transform Name for $(1-z)/(1+z)$

8 votes
Accepted

$dxdy=rdrd\theta$

8 votes
Accepted

Why is the Gauss map useful?

8 votes
Accepted

When solving a linear system, why SVD is preferred over QR to make the solution more stable?

8 votes
Accepted

Fourier Representation of Dirac's Delta Function

8 votes
Accepted

Proving $\exp (T + S) = \exp (T) \exp (S) = \exp (S) \exp (T)$ for $T,S\in\mathcal{L}(E)$

7 votes
Accepted

What 'complete' means in Hilbert Space

7 votes

If $f$ is Lebesgue measurable on $[0,1]$ then there exists a Borel measurable function $g$ such that $f=g$ a.e.?

7 votes
Accepted

Show differential operator is not bounded using definition of bounded operators

7 votes

Examples of self adjoint compact operators on Hilbert spaces

6 votes

How exactly do you calculate matrix $f(A)$ when $A$ is a matrix, $f$ a polynomial?

6 votes
Accepted

Proving improper integral convergence implications

6 votes
Accepted

Weak convergence implies weak* convergence?

5 votes

Spectrum vs eigenvalues

5 votes
Accepted

Proving that the spectral norm of a matrix is orthogonally invariant

5 votes
Accepted

Notation in definition of Fréchet differentiation

5 votes

$A \subset B$ and $A \subseteq B$, what is the difference?

5 votes
Accepted

Prove that if $a$ is a real number and $a^3 > a$ then $a^5 > a$

5 votes

For real part of $z$ and $w >0$, prove $\left|\frac{z - w}{\bar z + w}\right|< 1$?

5 votes
Accepted

Definition of Riemannian Curvature Tensor on Wikipedia

5 votes
Accepted

A curve with constant curvature and torsion

5 votes

Stone Weierstrass Theorem fails with "polynomials in sin x"

5 votes

let $ f(x)=\frac{1}{1+x^{2}}$ find $\lim _{p \to \infty } \|f \|_{p}$?

5 votes
Accepted

wedge product of $0$ and $dx$

4 votes

Proving some points missed in my proof.

4 votes

Showing that a complex-valued function is constant

1
2 3 4 5
13