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2019-07-12 15:09:53 +0200 commented answer How to generate a nonsquare Vandermonde matrix?

Thank you for the answer.

2019-07-11 10:13:46 +0200 asked a question How to generate a nonsquare Vandermonde matrix?

According to the documentation, we can generate a Vandermonde matrix using the method matrix.vandermonde() or vandermonde().

But they generate only square matrix. How do we generate a Vandermonde matrix which is not a square matrix?

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2015-04-22 19:38:18 +0200 commented question How to generate an element from laplace distribution

I found a way to do this by using numpy in sage.

import numpy numpy.random.laplace(loc,scal,size)

will generate an element for laplace distribution. But it is not a very "sage" way to do it. And I am still concerned about my first question.

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2015-04-21 21:57:56 +0200 asked a question How to generate an element from laplace distribution

Hi, I am wondering how to generate a random element according to laplace distribution. I tried the method RealDistribution(). But it failed.

According to the reference manual, laplace distribution is not supported.

In the manual, there are some examples showing how to deal with uniform distribution, Gaussian distribution, etc.

My questions are:

(1) How do I know exactly which distributions are supported by the RealDistribution() method?

(2) Is there anyway I can simply generate an element according to laplace distribution in sage?

Thank you in advance.