Kroki

Member for 6 years, 4 months
Last seen this week

Montreal, QC, Canada

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real-analysis

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13

Coin tosses with unknown success probability

Aug 16, 2022

12

Prove that $\sum_{a\in A} φ(a)=0$ where $A$ is finite Abelian group.

Apr 17, 2018

11

Evaluate the limit $\lim\limits_{n\rightarrow \infty}\int_{0}^{\pi}\left|\sin(x)-\sin(2nx)\right|\text{ d}x$

Aug 10, 2022

8

Price of Option in Betting Game

Jul 26

7

Finding $\displaystyle \lim_{n \rightarrow \infty} \sqrt{n} \int_0^1 \left(\frac{\sin t}{t}\right)^n dt$

May 15

Questions

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4

Solve an equation with integer variables

Mar 27, 2018

4

Convexity of a set defined by integrals of a function on measurable sets

Apr 13, 2018

4

Minimum of a function defined by a sum

Jul 24, 2022

3

$\begin{bmatrix}\mathbf O & U\\ V^T & 0\end{bmatrix}$ is diagonalizable?

Jul 26, 2022

3

Probability of being in the same connected componnent

Jun 22, 2020

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real-analysis

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probability

86

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65

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calculus

77

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44

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linear-algebra

73

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62

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sequences-and-series

67

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37

posts

Reputation

+10

Prove that $\sum_{a\in A} φ(a)=0$ where $A$ is finite Abelian group.

+30

Examples which show $\|\cdot\|_p$ on $L^p$ is not induced by an inner product (Parallelogram law)

+8

Project Euler Problem 783: Expected value of sum of squares

+10

Brezis' theorem 7.7: how to approach to prove $\left |\frac{d u_\lambda}{dt} (T) \right| \le\frac{|u_0|}{T}$?

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