F6 instead of up-arrow

For years, during which I've owned several Apple keyboards, I've experienced a well-documented (but ignored by Apple) problem where the up-arrow key sends the wrong signal. »

Reducing 2-SAT to an implication graph

I'm taking Coursera's Advanced Algorithms and Complexity course as part of the Data-Structures and Algorithms Specialization. In a lecture, I was introduced to a way of »