network profile
| bio | website | |
|---|---|---|
| location | Universidade de São Paulo, Brazil | |
| age | 28 | |
| visits | member for | 10 months |
| seen | Mar 21 at 20:24 | |
| stats | profile views | 42 |
I am currently a post-doc at the Physics department at the University of Sao Paulo. My interests are in Statistical Physics, stochastic processes and magnetism. More importantly, I really value simple and solid explanations to important problems in any science.
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Jul 25 |
awarded | Commentator |
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Jul 25 |
comment |
Distance between discrete random variables Hi @joriki. I really appreciate the answer, but not only did I not understand your argument, but computer simulations I have performed also show a clearly non-linear PMF. Also, in your explanation, where does the fact that there has been k draws enter? This is clearly relevant (taking, for instance, the extreme cases $k=1$ and $k=n$). Thanks again for the attention. |
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Jul 25 |
comment |
Distance between discrete random variables Yes. Uniformou, Butantã without juxtaposition or the results (not sure what the name for this is) |
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Jul 25 |
asked | Distance between discrete random variables |
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Jul 21 |
comment |
Conditions for the equivalence of $\mathbf A^T \mathbf A \mathbf x = \mathbf A^T \mathbf b$ and $\mathbf A \mathbf x = \mathbf b$ Note: $A^TAx=A^Tb$ is more well behaved and perhaps easier to solve. It is symmetric and positive definite (or perhaps semi-definite). |
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Jul 21 |
asked | Book suggestion for linear algebra “2” |
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Jul 19 |
answered | Numerical Methods for Linear Matrix Equation |
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Jul 18 |
revised |
Approximate solution for the root of a non-linear function deleted 2 characters in body |
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Jul 18 |
comment |
Approximate solution for the root of a non-linear function Oh my! I am sorry Leonid, you are right. My mistake. The RHS may be both pos. and neg. I will correct that in the question. |
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Jul 18 |
asked | A MatrixExp question: simplifying $\int_0^t e^{A(t-t')} e^{A^T (t-t')} dt'$ for a real matrix A |
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Jul 18 |
awarded | Editor |
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Jul 18 |
revised |
Approximate solution for the root of a non-linear function added 954 characters in body |
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Jul 18 |
comment |
Approximate solution for the root of a non-linear function Hi, I really appreciate the answer. So: only the first root is of interest. The parameters are all positive and have the following usual ranges: $0<b<2$, $0<g<10$ and $0<\omega<10$. This is approximate, but shows they are not very different from one another. I will edit the question to post a slightly more general panorama of the question. |
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Jul 17 |
answered | inequality on inner product |
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Jul 17 |
awarded | Supporter |
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Jul 17 |
awarded | Teacher |
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Jul 17 |
answered | Application of the Chebyshev inequality |
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Jul 17 |
asked | Approximate solution for the root of a non-linear function |
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Jul 17 |
comment |
Variation of a simple random walk Would you mind elaborating on that please? For me it is still not clear. For instance, what would the PMF be for finding the particle at position m after n steps? Same as a n/2 walk? And with what probability, 1/2? Thank you in advance. |
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Jul 16 |
asked | Variation of a simple random walk |
