Truncate Values in an array (matrix) below a certain threshold If you perform numerical calculations like the QR-Decomposition you can come across numerical rounding errors. In this code snippet we calculate the first householder vector and matrix to perform a QR Decomposition of random integer 4x4 Matrix. The matrix looks likes this: $$ A = \begin{bmatrix} -1 & -6 & 5 & -10 \ 7 & 6 & 7 & -2 \ -1 & -10 & 0 & -2 \ -6 & 9 & 6 & -6 \ \end{bmatrix} $$...
If you want run into the problem of having no python3 support for nvim, I fixed the problem by running: python3 -m pip install --user --upgrade pynvim
How to create a tridiagonal matrix? What is a tridiagonal matrix? It typically looks like this: $$ \begin{array}{cccccccc} a_{11} & a_{12} & 0 & \cdots & \cdots & \cdots & \cdots & 0 \ a_{21} & a_{22} & a_{23} & \ddots & & & & \vdots \ 0 & a_{32} & a_{33} & a_{34} & \ddots & & & \vdots \ \vdots & \ddots & \ddots & \ddots & \ddots & \ddots & & \vdots \ \vdots & & \ddots & \ddots & \ddots & \ddots & \ddots & \vdots \ \vdots & & & \ddots & a_{76} & a_{77} & a_{78} & 0 \ \vdots & & & & \ddots & a_{87} & a_{88} & a_{89} \ 0 & \cdots & \cdots & \cdots & \cdots & 0 & a_{98} & a_{99} \end{array} $$...
Working with Virtualenvs like pipenv is more than beneficial as you keep track easily of the different dependencies of your project and dont have to worry about your main python environment. However in during the development of your projects you might run into the situation that you require the shell for just verifying some small functions or run some scripts. The basic python shell provides is definitely suitable for this situation but using a shell like from ipython is even better....
Downloading multiple PDFs in a batch depending on your browser can be a time consuming job, so the easiest way to do this properly and platform independent is simply to write a small python script 馃槂馃悕 ...