Last updated 2026-08-19 · from git history, not hand-typed
Principia Orthogona · Book II

Book IIContents

This page is an index, not a text. The Volume II paper itself lives at the series root; everything below points at the file that is actually current.

The text

Volume II · Version 2a · 2026
Contact Realization of Generative Transitions
The current Volume II. Fold–contact correspondence, the threshold equivalence κ* ↔ τ, and the singularity–bifurcation theorem, with the Lean 4 status of each. This is the copy the rest of the series links to.
../vol2-contact.html
Volume I · Version 4 · 21 June 2026
The Mathematics of Generative Transitions
The volume Book II builds on: six assumptions, five operators, the operator chain G = UFKC, and the Whitney A1–A3 classification.
../vol1-mathematics.html

Companions

Companion paper
The dm³ Toy Model
The explicit, smooth, globally analysable system that realises the abstract contact-geometric framework — the bridge certifying that the fold theory of Volume I is not merely definable but instantiable.
../vol2-toymodel.html
Interactive
dm³ Dashboard
The interactive companion to the toy model. Note this is the real dashboard, at the series root — not book1/vol2-dashboard.html, which despite its filename is a copy of the Volume II text.
../vol2-dashboard.html

Every file in this directory

Listed in full, including the duplicate, so that nothing in book2/ is reachable only by guessing at a URL.
FileWhat it actually is
index.html This page.
vol2-contact.html The Volume II text. Until 2026-08-18 this file and index.html were byte-identical — the directory index was a second copy of the paper rather than an index. It also differs from the canonical ../vol2-contact.html only in relative paths. Cite and link the root copy.