Luigi Bianchi: Modern LaTeX Working Drafts and Source-Intake Witnesses

Dedicated Luigi Bianchi record for the Modern LaTeX Editions of Mathematics Manuscripts project. This record contains Italian source transcription, English translation working drafts, source scan witnesses, and auditfix packages for Bianchi differential-geometry and transformation-group texts. Status at a glance. Volume I of Lezioni di geometria differenziale remains represented as a package-audited Italian/English working edition through source pdfpages 001-543. The A2 branch, Lezioni sulla teoria dei gruppi continui finiti di trasformazioni, remains in progress. OCR/image-analysis material is witness/locator evidence only; source scans and package audit ledgers control mathematical readings. Latest update. Adds Bianchi_A2_cont_p0001_0090_IT_EN_20260612.zip, continuing the A2 Italian/English working stream through source p0090 / printed manuscript p071. It continues p0078-p0090 after the prior p0077 handoff, closes the interrupted sentence around p0077-p0078, proceeds through sections 17-22 in the current slice, and sets the next continuation at source p0091. The package includes Italian and English current/cumulative TeX/PDF, current and cumulative source witnesses, page/formula ledgers, audit notes, build summary, English parity check, metrics, queue, and checksums. Corrections and collaboration. Source comparisons, LaTeX fixes, translation corrections, and reader-facing issue reports can be suggested through GitHub issues or pull requests: https://github.com/KokunoYumeto/modern-latex-manuscripts.