Mathematics
user avatar
user avatar
user avatar
Anton Grudkin
  • Member for 6 years
  • Last seen more than 1 year ago
Profile Activity
Stats
2,820
reputation
0
reached
0
answers
0
questions
Communities
About

I study physics and love math.

Badges
View all badges
This user doesn’t have any gold badges yet.
6
silver badges
2
bronze badges
Posts

This user hasn’t posted yet.

Top network posts
View all network posts
15
$\arctan x=\frac{1}{2}i[\ln(1-ix)-\ln(1+ix)]$
11
Derivative of product of matrix by vector
7
Sylvester's law of inertia
5
We have matrix $A\in M_{n-1\times n}(\mathbb Z)$ so that the sum of entries in each row is zero. Prove that $\det(AA^T)=nk^2.$
5
Functional Equation of iterations

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.