Principia Orthogona V — Student Edition.
Redirecting to book5/GTCT_V_Student_Edition.html… 2026-09-22. This file and book5/GTCT_V_Student_Edition.html were two live copies of the same page. book5/ is this edition's own book folder, linked from its own hub (book5/index.html, book5/ch00.html); this root copy is a pre-restructuring leftover. Paragraph-for-paragraph identical (143/143), nothing lost. Kept as a redirect so external links still resolve, following the convention set by book7/chcurie.html (merged 2026-08-25).