Adolf Kneser: Lehrbuch der Variationsrechnung — Complete German, English, and Simplified Chinese Editions

Complete directly readable German, English, and Simplified Chinese source-witnessed editions of Adolf Kneser's 1900 Lehrbuch der Variationsrechnung. Adolf Kneser is the work's author. The working transcription, translation, typesetting, and release-assembly layers are project-created and are not authorship, publisher, scan-provider, rights-holder, or endorsement claims. The package includes directly readable TeX sources, a complete scan witness, deterministic source/evidence bundles, and explicit per-layer rights and provenance notes. German is source-faithful authority; English and Simplified Chinese are translations; English remains the default preview.