User Mathieu Krisztian

2 votes

2 answers

4k views

What is the inverse of the divergence operator?

asked Mar 14, 2020 at 17:26

2 votes

1 answer

39 views

Violating the central limit theorem if using Dirac as probabilistic function?

asked Apr 20, 2021 at 20:31

2 votes

1 answer

204 views

Is it true that "one does not add two vectors of different origin"?

asked Feb 4, 2022 at 8:51

1 vote

1 answer

41 views

Are there two formulas under the null hypothesis for the test statistics of the comparison of proportions of two samples?

asked Jan 5, 2022 at 19:09

1 vote

2 answers

50 views

Is there a risk, in some special cases of likelihood form, that using logarithm in likelihood derivation, drives to losing some good solutions?

asked Jun 9, 2021 at 21:38

1 vote

1 answer

287 views

Does the spline between two points depend on other points that are outside the interval between these two points?

asked Aug 25, 2021 at 11:46

1 vote

1 answer

60 views

Is the ordering of integrals important in a 2D integral?

asked Oct 4, 2021 at 19:52

1 vote

1 answer

47 views

For a probability distribution, what is the most fundamental object : the probability density function or the cumulative distribution function?

asked Dec 24, 2021 at 20:05

1 vote

1 answer

290 views

What is the connection between the generator of a Lie group, the element of the group, and the exponential?

asked Apr 28, 2021 at 21:18

1 vote

3 answers

78 views

Formulation of a sentence from the estimator of a likelihood function

asked May 7, 2021 at 16:58

1 vote

0 answers

88 views

Is it possible to have a null value at a given point of the derivative of function while having this point not a local maximum or minimum?

asked May 23, 2021 at 16:24

1 vote

1 answer

44 views

Is it mathematically correct to write the primitive of a function in this way : $F(x)=\int f(x)dx$

asked Mar 6, 2021 at 16:47

0 votes

1 answer

40 views

How to interpret/"understand with hands" the fact that $\sum_{n=0}^{\infty} e^{-na}\ne \int_{0}^{\infty} e^{-na}dn$?

asked Mar 6, 2021 at 19:46

0 votes

1 answer

60 views

What is the partition for a dice, where the universe is $\Omega=\{1, 2, 3, 4, 5, 6\}$?

asked Mar 14, 2021 at 11:33

0 votes

1 answer

331 views

In Euler-Lagrange equation, why don't we use a partial derivative for the time?

asked Mar 28, 2021 at 17:50

0 votes

1 answer

29 views

What is the number of distinct arrangement of a collection of 2 white balls and 2 black balls?

asked Apr 4, 2021 at 8:03

0 votes

1 answer

52 views

Why are solutions of derivative of function equal to 0 different to solutions of derivative of logarithm of function equal to 0?

asked May 30, 2021 at 7:26

0 votes

0 answers

30 views

Is it true that probability is exhaustive while likelihood is not?

asked May 6, 2021 at 20:38

0 votes

2 answers

56 views

Why $\pi$ appears in Dirac? [duplicate]

asked May 19, 2020 at 14:39

0 votes

1 answer

271 views

What is the connection of Gell-Mann matrices with SU(3)? [closed]

asked Jun 6, 2020 at 17:56

0 votes

3 answers

198 views

Why is there a hierarchy of interest between associativity and commutativity

asked Jun 27, 2020 at 16:34

0 votes

1 answer

97 views

What is derivative of $z^*z$ : I find two contradictory results

asked Dec 30, 2020 at 13:08

0 votes

0 answers

32 views

What is meaning imposing a $Z_2$ symmetry on an expression?

asked Jan 2, 2021 at 16:58

0 votes

0 answers

83 views

What is the complex conjugate of the complex $SU(2)$ doublet $(a+ib \quad c+id)^T$?

asked Jan 30, 2021 at 12:43

0 votes

0 answers

22 views

What does represent the random variable $X^i$ associated to a Bernoulli law?

asked Jan 1, 2022 at 18:50

0 votes

1 answer

894 views

Does the error (uncertainty) on chi2 exist?

asked Sep 2, 2021 at 20:24

0 votes

0 answers

22 views

Should the subsets of the universe necessary cover graphically, when added together, the full universe, or not.

asked Sep 19, 2021 at 20:51

0 votes

1 answer

41 views

Is $x=\infty$ considered or not as a solution to $\exp(-x)=0$?

asked Jun 10, 2021 at 18:25

0 votes

1 answer

110 views

Why does Taylor expansion of logarithm of gaussian allows to find the exact value at $mean+1\sigma$ while without logarithm does not allow it?

asked Jun 12, 2021 at 20:58

0 votes

1 answer

44 views

Is limit of $a.b^2$ undetermined when $a\rightarrow+\infty$, $b\rightarrow 0$?

asked Jun 13, 2021 at 10:24

Stack Exchange Network

36 Questions

What is the inverse of the divergence operator?

Violating the central limit theorem if using Dirac as probabilistic function?

Is it true that "one does not add two vectors of different origin"?

Are there two formulas under the null hypothesis for the test statistics of the comparison of proportions of two samples?

Is there a risk, in some special cases of likelihood form, that using logarithm in likelihood derivation, drives to losing some good solutions?

Does the spline between two points depend on other points that are outside the interval between these two points?

Is the ordering of integrals important in a 2D integral?

For a probability distribution, what is the most fundamental object : the probability density function or the cumulative distribution function?

What is the connection between the generator of a Lie group, the element of the group, and the exponential?

Formulation of a sentence from the estimator of a likelihood function

Is it possible to have a null value at a given point of the derivative of function while having this point not a local maximum or minimum?

Is it mathematically correct to write the primitive of a function in this way : $F(x)=\int f(x)dx$

How to interpret/"understand with hands" the fact that $\sum_{n=0}^{\infty} e^{-na}\ne \int_{0}^{\infty} e^{-na}dn$?

What is the partition for a dice, where the universe is $\Omega=\{1, 2, 3, 4, 5, 6\}$?

In Euler-Lagrange equation, why don't we use a partial derivative for the time?

What is the number of distinct arrangement of a collection of 2 white balls and 2 black balls?

Why are solutions of derivative of function equal to 0 different to solutions of derivative of logarithm of function equal to 0?

Is it true that probability is exhaustive while likelihood is not?

Why $\pi$ appears in Dirac? [duplicate]

What is the connection of Gell-Mann matrices with SU(3)? [closed]

Why is there a hierarchy of interest between associativity and commutativity

What is derivative of $z^*z$ : I find two contradictory results

What is meaning imposing a $Z_2$ symmetry on an expression?

What is the complex conjugate of the complex $SU(2)$ doublet $(a+ib \quad c+id)^T$?

What does represent the random variable $X^i$ associated to a Bernoulli law?

Does the error (uncertainty) on chi2 exist?

Should the subsets of the universe necessary cover graphically, when added together, the full universe, or not.

Is $x=\infty$ considered or not as a solution to $\exp(-x)=0$?

Why does Taylor expansion of logarithm of gaussian allows to find the exact value at $mean+1\sigma$ while without logarithm does not allow it?

Is limit of $a.b^2$ undetermined when $a\rightarrow+\infty$, $b\rightarrow 0$?