Pre-Quantum Electrodynamics

For labelling sections and equations, I've preferred to use a semantic format instead of traditional numbers.

This has a number of advantages: the labelling is

• easier to remember in the long run
• stable under tree structure modifications

but also come with some things which need getting used to:

• the loss of clear notion of ordering
• abbreviations being as short as possible, thus needing learning

Section labelling: floated right next to the title of any section, you will see the label together with a permalink (pointing to the main site's version of that particular section). Under a section's headline, you will also sometimes see references (in small gray letters) to corresponding sections in complemetary literature.

Equation labelling: similarly to sections, some (but not all) equations also carry a semantic label, given in parentheses to the right of the equation. As per sections, a permalink is also given, together with corresponding equation numbers in complementary literature.