EGP is a series of K. Likharev’s lecture notes and problems on four core physics courses:

• Part CM: Classical Mechanics (for a one-semester course),
• Part EM: Classical Electrodynamics (two semesters),
• Part QM: Quantum Mechanics (two semesters), and
• Part SM: Statistical Mechanics (one semester).

Main specific features:

• • • Succinct lecture notes: ~200 pp. per semester.
    • Focus on problem-solving skills; almost 1,200 problems with detailed solutions – on top of numerous in-lecture examples.
    • Extensive cross-referencing between the parts.

Open online access: since 2014, with many later improvements and problem additions; currently, at mirror sites

• • • https://commons.library.stonybrook.edu/egp/,
    • https://essentialgraduatephysics.org/,
    • https://sites.google.com/site/likharevegp/.

Rapidly growing readership: more than 30,000 file downloads per year, by readers from more than 150 countries worldwide – see the graphics below.

Statistics: Digital Commons – BePress. (“Additional files”: separate chapters and appendices.)