Critical Notes — Chapter III, Section A: The Axioms of Projective Geometry (§§ 102–140)

Primary Text: Read Verbatim Treatise Track (pp. 117–147) · Overview: Analytical Summary · Cross-Corpus Loci: Master Concordance

Historical & Cross-Corpus Commentary

Cross-Link to Pappus & PoM Ch. XLV

Figures 6–8 (pp. 123–125) illustrate the exact projective invariants of geometor/pappus and PoM §365. In 1903, Russell retains the mathematical exposition of §§111–127 while discarding the neo-Kantian transcendental deduction of §§128–139.