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Main user
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Anton Grudkin

I study physics and love math.

  • Saint Petersburg, Russia
  • AntonGrudkin
  • Member for 4 years, 10 months
  • 0 profile views
  • Last seen Dec 23 '20 at 22:44

Communities (3)

  • Mathematics 2.7k 2.7k 1010 silver badges2020 bronze badges
  • Stack Overflow 101 101 55 bronze badges
  • TeX - LaTeX 101 101 22 bronze badges

Top network posts

  • 13 $\arctan x=\frac{1}{2}i[\ln(1-ix)-\ln(1+ix)]$
  • 6 Sylvester's law of inertia
  • 6 Derivative of product of matrix by vector
  • 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
  • 5 How do we get the final formula of the Bernoulli number?
  • 5 Characterization of the quasi-arithmetic mean
  • View more network posts →

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