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becko
  • Member for 11 years, 5 months
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8 votes
Accepted

Elementary definable

8 votes

Finitely many Supreme Primes?

6 votes
Accepted

How to check if a non-negative matrix is primitive (in the stochastic sense)?

5 votes
Accepted

Determinant of diagonal plus constant matrix

3 votes

Weird sum of exponentials

2 votes
Accepted

General formula for integration on $m$-dimensional hypersurface in $\mathbb{R}^n$ ($m<n$)?

2 votes

Simplify $ \sum_{\{x_{ij}|\forall_i \sum_j x_{ij} = \xi_i, \forall_j \sum_i x_{ij} = \eta_j \}} \prod_{ij} \frac{a_{ij}^{x_{ij}}}{x_{ij}!} $

2 votes
Accepted

Mean and variance of truncated generalized Beta distribution

2 votes

Product of Sum equal to Sum of Product

2 votes

Matrix inverse of $A + \epsilon I$, where $A$ is invertible

2 votes

$\min_x \max_yf(x,y) = \min_y \max_x f(x,y)$

2 votes

Game theory textbooks/lectures/etc

1 vote

Simplify an integration

1 vote

Laplace method on a simplex with factorized integrand

1 vote
Accepted

Integrate: $\int_0^1 ||\vec x||^{-m}\mathrm{d}\vec{x}$

1 vote

$I = \int_{- \infty}^\infty \delta (n - \|\mathbf{x}\|^2) \, \mathrm d \mathbf{x} $ should not diverge

1 vote
Accepted

Local stability of a min-max point

1 vote

Find $f(t)$ such that $ f\left(\dfrac{t^2}{2-t}\right) = -5t+4 $.

1 vote
Accepted

Numerical computation of the Rayleigh-Lamb curves

1 vote

Symbol for "probably equal to" (barring pathology)?

1 vote
Accepted

Proving Schwarz's inequality

1 vote

Solving $\int_0^1...\int_0^1 \delta(Q-\sum_{a,b}f_a g_b)\prod_{a,b}[(1-f_a g_b)^{n_{ab}}(f_a g_b)^{m_{ab}}] d f_1 d f_2 d g_1 d g_2$?

1 vote

Convergent or Divergent Integral

0 votes

$\int \delta(x + xy/u - a)\delta(y + xy/v - b)f(x,y)dxdy$?

0 votes
Accepted

Drawing $m$ objects from $n$ types (with replacement). What is the distribution of type counts?

0 votes

When is the dual graph simple?

0 votes

Calculate: $\int 3^{3^{3^{x}}}3^{3^{x}}3^{x} dx$

0 votes

Computing $\mathrm{B}_{x,y}(\alpha+1,\beta) / \mathrm{B}_{x,y}(\alpha,\beta)$ numerically

0 votes

Preservation of linear separability under linear transformations

0 votes
Accepted

Matrix derivative: $\frac{\partial}{\partial A_{ij}}(\mathbb{A}(\mathbb{A}^T\Sigma\mathbb{A})^{-1}\mathbb{A}^T)$