Ondřej Čertík

I'll start with the conclusion: making backwards incompatible version of a language is a terrible idea, and it was bad a mistake. This m...

I have attended the SciPy 2013 conference in Austin, Texas. Here are my impressions. Number one is the fact that the IPython notebook wa...

Unfortunately, pdflatex does not support .eps images, for example the following code fails: \usepackage{graphicx} ... \includegraphics{qc...

From time to time I need to convert scanned documents to a pdf format. Usage scenario 1 : I scan part of a book (i.e. some article) on a s...

I have read the text The Truth About Greenhouse Gases by William Happer , a physicist at Princeton. I liked it, so I posted it to my Googl...

I was doing some finite element (FE) calculation and I needed the sum of the lowest 7 eigenvalues of a symmetric matrix (that comes from the...

Cython is now considering options where to move the main (mercurial) repository, and Robert Bradshaw (one of the main Cython developers) h...