about¶
Biographical, mathematical, and philological background for geometor.lemoine.
Émile Lemoine (1840–1912) — Life, modern triangle geometry (\(X(6)\)), L’Intermédiaire des Mathématiciens, and the invention of Géométrographie.
Mascheroni (1797) & Poncelet–Steiner (1833) — Minimal-instrument constructibility from Georg Mohr and Lorenzo Mascheroni to Jakob Steiner and August Adler.
Textual Stemma & Archival Provenance — Oran (1888) → Pau (1892/1893) → Scientia No. 18 (1902), 300 DPI multimodal scan verification, and SHA-256 source witnesses.