Minkowski, Hecke, Landau, Sylvester, and Other Classical Mathematics Authors: Modern LaTeX Drafts

General author cluster for the Modern LaTeX Editions of Mathematics Manuscripts project. This record holds working packets for authors that are not yet split into dedicated author records, including Minkowski, Hecke, Landau, Frobenius, Poincare, Kneser, Kronecker, Picard, Klein-Fricke, and related classical mathematics. Some former mixed-shelf authors now have dedicated records; older copies here remain backstop/provenance where present. Status at a glance. This is a staging shelf. Some packages are source-checked working drafts; others are update packets, provenance, or repair materials. Readers should use package README/status files and the public GitHub mirror for current status and correction pathways. Latest update. Adds Kneser_LVR_p0158_0177_DE_EN_20260611.zip. This Kneser Lehrbuch der Variationsrechnung packet covers source pp.158-177, beginning at section 37 and stopping before section 40, with German transcription and English translation working drafts, cumulative DE/EN TeX/PDF through p177, source-scan witnesses, figure/math/source ledgers, and clean XeLaTeX build logs. The package reports figures 16-18 handled with source-derived crops plus TikZ reconstructions. It is a package-audited, source-witnessed working draft, not a final critical edition. Also current in this version. The same surface retains poincare_v1_19.zip, a Poincare Tome I French/English working tranche through Chapter XI, Theorie des centres, source witnesses through v1_0262, and next continuation at v1_0263. Corrections and collaboration. Public working mirror and issue/pull-request surface: https://github.com/KokunoYumeto/modern-latex-manuscripts.