As of May 31, 2023, we have updated our Code of Conduct.
Mathematics
Mystery's user avatar
Mystery's user avatar
Mystery's user avatar
Mystery
  • Member for 3 years, 8 months
  • Last seen more than a week ago
Profile Activity
Stats
482
reputation
6k
reached
3
answers
34
questions
Communities
View all
Badges
View all badges
This user doesn’t have any gold badges yet.
2
silver badges
12
bronze badges
Top tags
View all tags
1
Score
8
Posts
22
Posts %
0
Score
9
Posts
24
Posts %
0
Score
6
Posts
16
Posts %
0
Score
4
Posts
11
Posts %
0
Score
4
Posts
11
Posts %
0
Score
3
Posts
8
Posts %
Top posts
View all questions and answers
All Questions Answers
Score Newest
question
7
$( \ X\to G \ , \ \star \ )$ is a group if $(\varphi \star \psi)(a) = \varphi(a) \star \psi(a)$
May 18, 2022
question
3
Polar is equal to the radical axis, special case.
Dec 2, 2020
question
3
Proving a succession with its limit is compact on the usual topology
Sep 27, 2022
question
2
Solve $x^4y^{\prime\prime} = (y-xy^\prime)^3, y(1) = y^\prime(1) = 1$
Apr 30, 2020
question
2
Let $G$ be a finite group, $N\trianglelefteq G$ and $H\leq G$. Show that $[NH:N]$ divides $|H|$ and $[G:N]$.
Oct 25, 2020
question
2
Using the integral test for $\sum _{n=2}^\infty \frac{1}{(\ln n)^{\ln n}}$
Jun 14, 2022
question
1
Help solving an ODE $\frac{d^2y}{dx^2}+y(x)=(\frac{dy}{dx})^2$
Mar 22, 2020
question
1
Show that $p_\rho(λ) = p_{\rho_1}(λ)p_{\rho_2}(λ)$ where $p_\rho,p_{\rho_1},p_{\rho_2}$ are the characteristic polynomials.
Mar 24, 2020
question
1
Prove that, if $A, B \in M_{m × n}(K)$ then $A$ is equivalent to $I^{m, n}_r \iff rank(A)=r$, and $A$ is equivalent to $B$ iff their ranks are equal.
Mar 25, 2020
question
1
Let $\rho$ be a normal operator, show $\rho^*(v) = 0 \iff \rho(v) = 0$
Apr 2, 2020

Your privacy

By clicking “Accept all cookies”, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy.