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, Sylvester, Steinitz, Frobenius, Bianchi, Poincare, Kneser, Kronecker, Picard, Klein-Fricke, and related classical mathematics. 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. Replaces Poincare Tome I v1_14 with v1_15. The current Poincare differential-equations stream now covers Chapter VI, from the heading Théorie des cycles limites through the close before Chapter VII. Figures 16-23 are included as source-derived crops. Chapter VII begins at the next continuation point. Corrections and collaboration. Public working mirror and issue/pull-request surface: https://github.com/KokunoYumeto/modern-latex-manuscripts.