Nearly all modern computers use two's complement for integer arithmetic.

This last section is meant to draw your attention to a further sphere of potential use for your home computer, namely letting it monitor and control some activity directly, without your own participation […]

In an attempt to build a few intertextual bridges, we use images from lesbian literature to illustrate principles we find most useful in thinking psychoanalytically about homosexuality. We call these principles lesbian rules. A lesbian rule was originally a mason's rule made of lead […] Thus, figuratively, it became, […] a principle allowing flexibility. […] Clinical psychoanalysis uses many such lesbian rules.

The exterior derivative of a “scalar”, i.e., a function f=f(x¹,x²,...,xⁿ) where the xⁱ’s are coordinates of ℝⁿ, is df=∂f/∂x¹dx¹+∂f/∂x²dx²+...+∂f/∂xⁿdxⁿ.