Collection of articles describing various applications for the Raspberry π (in german).

A reading protocol is a set of strategies that a reader must use in order to benefit fully from reading the text. Poetry calls for a different set of strategies than fiction, and fiction a different set than non-fiction. It would be ridiculous to read fiction and ask oneself what is the author's source for the assertion that the hero is blond and tanned; it would be wrong to read non-fiction and not ask such a question.  This reading protocol extends to a viewing or listening protocol in art and music. Indeed, much of the introductory course material in literature, music and art is spent teaching these protocols.

Mathematics has a reading protocol all its own, and just as we learn to read literature, we should learn to read mathematics.  Students need to learn how to read mathematics, in the same way they learn how to read a novel or a poem, listen to music, or view a painting.  Ed Rothstein’s book, Emblems of Mind, a fascinating book emphasizing the relationship between mathematics and music, touches implicitly on the reading protocols for mathematics.

From the book Rediscovering Mathematics: You Do the Math by Shai Simonson. http://web.stonehill.edu/compsci/RediscoveringMath/RM.html

Prototype of a translator from a python-like syntax to C. Found via
https://www.jwz.org/blog/2017/04/python-has-a-lot-to-fucking-answer-for/#comments

On http://xed.ch/help/, a number of useful personal technical notes can be found.

For example, http://xed.ch/help/usbdrive.html describes how to create bootable USB drives.

Example of an Org-mode document.

70 presentation slides explaining the git version control tool. Found via
Sumana Harihareswara's blog
http://www.harihareswara.net/sumana/2016/08/04/1

Alexandre Stefanov long maintained a list of online math texts and other materials at Geocities, but it appears that his original web site is no longer available. Because these resources may be of interest to our readers, we present here a modified version of Stefanov's list as of November 18, 2009. We welcome corrections or suggested additions to this list.

Forums for discussing modern cryptographic practice. As of 2016-07-19, there are two mailing lists:
Curves - Elliptic curve cryptography.
 New curves, implementation techniques, and protocols such as PAKE and  
 signatures.

Messaging - Secure end-to-end messaging.
 New approaches to key management, authentication, usability, and deployment.

Issues with new ubuntu tablet
Asked by Paul Harmsworth on 2016-04-22

The links from this page display HTML renderings of the man pages from the Linux man-pages project as well as a curated collection of pages from various other free software projects.
From the author of
The Linux Programming Interface
http://man7.org/tlpi/index.html