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youpilat13
  • Member for 5 years, 11 months
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7 votes
2 answers
4k views

conservation of dot product with parallel transport

4 votes
0 answers
129 views

Demonstration of inequality between 2 variances expressions

3 votes
0 answers
140 views

Spherical harmonics - Computing the variance of Poisson noise integrated over $\ell$ on a defined quantity?

3 votes
1 answer
186 views

Demonstration of relation between geodesics and FLRW metric

3 votes
1 answer
679 views

Covariant derivative - do the link between 2 expressions

3 votes
0 answers
113 views

Deduce Geodesics equation from Euler equations

3 votes
0 answers
90 views

Statistics with Fisher formalism : loss or gain of information with data cross-correlations

2 votes
1 answer
382 views

Maximum Likelihood Estimation - Demonstration of equality between second derivative of log likelihood and product of first derivatives

2 votes
4 answers
108 views

Get statistical significance from the likelihood and so from the posterior (in anisotropy expansion)

2 votes
0 answers
131 views

Directional derivative, gradient and metric

2 votes
1 answer
714 views

Demonstration for the covariant derivative of a vector

2 votes
1 answer
1k views

Expression with covariant derivative of a vector component

1 vote
1 answer
491 views

Difference between Covariant derivative notations

1 vote
0 answers
804 views

Covariant derivative : calculation on basis vectors

1 vote
1 answer
54 views

Expressions of basis vectors : $\vec{e_{i}}=\dfrac{\partial\vec{OM}}{\partial x^{i}}$ and $\vec{e_{i}}=\dfrac{\partial}{\partial x^{i}}$

1 vote
3 answers
678 views

Directional derivative, gradient and metric

1 vote
0 answers
72 views

Relation with Hessian and Log-likelihood

1 vote
0 answers
81 views

Interpretation and understanding of the relation involving conditional probabilities and conditional densities.

1 vote
0 answers
87 views

Can we have a Non-Gaussian Likelihood in Fisher's formalism and which are the conditions or examples?

1 vote
0 answers
30 views

Covariant derivative set to 0 from differential of metric

1 vote
1 answer
215 views

How to build a Cross-correlated Covariance matrix by solving an equation with Covariance and Variance expression of an unknown random variable?

1 vote
0 answers
40 views

Make the link between Generalized eigenvecors and MLE to buid a cross-correlated Fisher or Covariance matrix in order to get better constraints

1 vote
0 answers
24 views

Expression on the computation of a Fisher matrix element : different cases

1 vote
1 answer
56 views

Action of a 1-form on vector : changing of coordinates - tensor calculus

1 vote
0 answers
16 views

How to know the percentage of falling of height of Likelihood when I project the edge 1 C.L sigma joint distribution on the 1D Likelihood

1 vote
0 answers
53 views

What is the expression of the ratio variance for random variables?

1 vote
0 answers
66 views

Expression of multiple covariance terms in the Delta method for a 2D function

1 vote
1 answer
101 views

Compute Variance of a the ratio of different terms : which term to consider as random variable?

1 vote
1 answer
67 views

Estimator : Mean of ratio of quantities tends to be equal or equal to ratio of mean of quantities

0 votes
0 answers
92 views

Expectation for a ratio of sum of $\Gamma$ distributions