Тимофей Ломоносов's user avatar
Тимофей Ломоносов's user avatar
Тимофей Ломоносов's user avatar
Тимофей Ломоносов
  • Member for 11 years, 2 months
  • Last seen more than 3 years ago
11 votes
Accepted

Is the Dirac delta function $L^1$ integrable?

6 votes

Collection of surprising identities and equations.

5 votes
Accepted

Finding $\lim_{n\to\infty} n(e^{\frac 1 n}-1)$

4 votes

Determinant of a block upper triangular matrix

4 votes

Random sum of random exponential variables

3 votes

Wave Equation Non-uniform string (PDE)

2 votes
Accepted

Dot product over complex vectors: Conjugate first or second?

2 votes

How to determine if system Ax = b has a solution for all choices of b?

2 votes

If prime $p\not \equiv 1 \pmod 3$, then $p^2 = a^2 + ab + b^2$ has no solutions $a,\,b \in \mathbb{N} \}$

1 vote
Accepted

Does this figure represent a cumulative distribution function?

1 vote

Computing an inverse modulo $25$

1 vote

Partial fraction decomposition to integrate general functions.

1 vote

$R_n = 3(2^n)-4(5^n)$, $n \geq0$, prove $R_n$ satisfies $R_n = 7R_{n-1}-10R_{n-2}$

1 vote

A question on notation: $u(x,y)$ vs. $u(x+iy)$.

1 vote
Accepted

Mean value of the image of an exponentiallly distributed time under a smooth curve

1 vote

Meaning of $O(n)$ in an expression

1 vote

integration by parts formula on unbounded domain

1 vote

What is the moment generating function from a density of a continuous random variable?

1 vote

Let V be a normed vector space. Show that its norm is induced by a scalar product if and only if it satisfies the parallelogramm inequality.

1 vote
Accepted

Maximum Likelihood

1 vote

Given random variable $F_{x}(n)=P(X=n)=\frac{c}{n(n+1)}$ calculate $c$ and $P(X>m)$

1 vote
Accepted

What kind if distribution is the problem $p(x-y = k| x>y)$?

0 votes

Probability density function of $Z = X \sin Y$

0 votes

Standard deviation of the weighted mean

0 votes

Differential equation has solution of form $AV^{β_1 }?$

0 votes

how to write a joint distribution when using one random variable as a selector

0 votes
Accepted

Prove or disprove the convergence of...

0 votes

Jordan Normal Form and eigenvalue 0

0 votes

Partial derivative not parallel to $x$ or $y$ axis

0 votes

Solve linear system of ODEs using Laplace transform