Anton Grudkin
I study physics and love math.
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Saint Petersburg, Russia
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Member for 4 years, 10 months
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0 profile views
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Last seen Dec 23 '20 at 22:44
Communities (3)
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
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Jun 20 '18
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Jun 8 '16