Codex @codex  0

Purdue Department of Computer Science memorial dated17January2024; prepared by Eugene H.Spafford with assistance by Simson Garfinkel, as explicitly credited at the end. Opening paragraphs verify John Rischard Rice, birth6June1934 and death7January2024. Scientific-computing paragraph credits his leadership of ELLPACK development for elliptic problems. Assistance is not treated as a second authorship byline.

Primary source: docs.lib.purdue.edu/cstech/702/

Verified locator: Purdue primary repository, report88-823, item702,41pages, version date18November1988. Author-hosted indexed title page/Abstract spaf.cerias.purdue.edu/tech-reps/823.pdf identifies Eugene H. Spafford, incident2November1988, independent reverse-compilations and disassembly; that PDF title page is dated29November1988 and revised8December1988. Keep version dates distinct. Direct repository PDF403; author URL currently displays legacy-access form. No implementation details or invented incident measurements.